Major League Baseball mandates that teams play out the games scheduled in September, regardless how far out of contention they are. Players are contractually obligated to play in those games.

Fans, on the other hand, are under no obligation to watch or listen to those games, check the box scores, or to give any regard whatsoever to what happens.

Most fans of the Kansas City Royals have moved on, as of last Sunday, to football season, and rightly so. But still, the baseball games go on. And a lot has happened, and will happen, this September that is worthy of note.

New Ownership:

The sale of the Royals to Kansas City businessman John Sherman requires approval at the league meeting this winter. But with that approval essentially guaranteed, Sherman can get a jumpstart this fall on deciding the direction of the franchise. He’ll certainly be paying close attention to the product on the field, as well as evaluating what help can be realistically expected from the minor league system.

Little is known about Sherman’s plans for the team as it is currently constituted. There are rumors that he’ll keep general manager Dayton Moore in some capacity. Whether or not manager Ned Yost returns for another season remains to be seen.

Sherman’s evaluation, and his philosophy toward spending on free agents (to this point unknown) will affect the futures of several current Royals. Should Alex Gordon be brought back for a swan song? Should the team lock slugger Jorge Soler up long term? Should veterans Whit Merrifield, Danny Duffy and Ian Kennedy be traded for prospects?

Roster Expansion:

Major league teams are expanding their rosters in a big way for the last time this September. By rule, teams have been permitted to bring anyone on their 40-man roster up to the big leagues on September 1. If a club so desired, it could fill its dugout with prospects and give them a chance to gain experience on the big stage.

The tradition of roster expansion in September allows a handful of men every year to realize the dream of playing in the major leagues who would otherwise never make it. For all the players called up, the expansion allows them to showcase their abilities for future opportunities.

Backup catcher Nick Dini was called up to Kansas City earlier in the summer due to an injury to Cam Gallagher. But Dini knows what September roster expansion means to fringe players like himself.

“It’s huge. You play the whole season with the hopes of getting to play in the big leagues,” Dini said. “All the work you put in during the offseason, and during the season, it’s all for this, to get to get to the big leagues and show what you can do. September is a huge opportunity that we all want to take advantage of.”

Dini admitted part of the challenge of September call-ups is that playing time for so many players is limited. Men accustomed to playing every day suddenly find themselves sitting on the bench for days at a time.

“It’s tough but that’s part of being a professional,” the 26-year-old catcher said. “When it’s your turn to play, you’ve got to be ready to play. The days when you aren’t playing, you’ve got to put the work in to make sure you’re ready to go when your name is called.”

The rule of September roster expansion was recently amended. Starting next season, teams will only be allowed to expand their rosters to 28. Dini said this fact is well known to minor leaguers.

“Guys are aware of (the change) and how it’s going to affect opportunities. That’s 12 less slots for each team, so 12 less opportunities for guys to get called up. But that’s what’s going on. There’s nothing you can do about it. My mentality has been just to go out and prepare, and if, God willing, it happens, then you’re ready to go.”

The Royals’ September call-ups include utility player Erick Mejia and pitchers Gabe Speier and Jesse Hahn. Each has a good shot at being on the roster next summer, so this exposure should accelerate their learning curve.

Keller On Ice:

The Royals announced in late August that it would limit pitcher Brad Keller’s innings and pitch count. The team indicated that Keller still had a ways to go in the season, but it hinted at concern for the 24-year-old’s health. He got blasted on August 26, and that was all the Royals needed to immediately shut Keller down.

“It was a consensus among the coaches that it’s what I needed,” Keller said. “It sucks, from the competitive side. You always want to go out there and compete with the boys. But it’s like a stepping stone for the future. They’re looking out for my best interest, and I agree with what they’re doing. So I just have to (accept it) and keep moving forward.”

Keller’s absence in the starting rotation will open up opportunities for others. Giving starts to Jorge Lopez will open up relief opportunities for Speier, Hahn and others. The final month should see Kyle Zimmer, Josh Staumont and Eric Skoglund get a long look in the bullpen.

“I’m really excited to see how we do in September and what the other guys can do,” said Keller. “It’s a showcase. It’s going to give them a chance to get their feet wet, to get an understanding of what it’s like to play in the big leagues, on and off the field.”

Minor League Playoffs:

When the prospects that eventually won the 2015 World Series worked their way up through the farm system, a premium was placed on winning minor league championships. The franchise wanted the Royals of the future to learn to win together. New prospects, now at the lower levels of the minors, are reviving the winning tradition.

The Wilmington Blue Rocks, a club flush with premium prospects, is competing this weekend for the high A classification Carolina League championship. Meanwhile the lower A-ball Lexington Legends are playing for a South Atlantic League title. And down at the Royals Dominican Academy, a collection of Latin American prospects claimed the Dominican Summer League championship.

Fall League Action:

Some of the Royals’ top prospects in the minors will get additional seasoning in the Arizona Fall League. Brewer Hicklen and Kyle Isbel, seen by the Royals as outfielders of the future, will be joined by versatile slugger Gabriel Cancel. Pitcher Daniel Lynch, considered the Royals #3 prospect, will see some additional innings in Arizona to make up for time lost due to injury earlier in the summer. Lynch will be accompanied in Arizona by fellow pitching prospects Daniel Tillo and Tad Ratliff.

The Kansas City Royals went 71-91 in 2011. While that sounds great in comparison to the current iteration, it was at the time considered by most to be just another rotten season by an inept franchise.

But anyone really paying attention might have noticed that on May 6 of that year, a rookie named Eric Hosmer was promoted to the big leagues at just 21 years of age.

Just a few days later, on May 18, Hosmer was joined by 22-year-old pitcher Danny Duffy. The two knew each other well, having played together at nearly every level of the minor leagues.

On June 11, 22-year-old Mike Moustakas joined the party. Then on August 10, Salvador Perez got called up not long after his 21st birthday. And on Sept. 21, yet another 21 year old, flame-throwing reliever Kelvin Herrera, was promoted to the big leagues.

At the time, hardly anyone noticed the tidal wave of talent crashing upon Kauffman Stadium. To some it might have appeared to be another move of desperation by a team without direction. But that wave had been planned, nurtured and timed with great precision.

Fewer still noticed when pitcher Greg Holland and outfielder Jarrod Dyson debuted in Kansas City at the tail end of 2010. But those seven players were a wave drafted or signed to international free agent deals by General Manager Dayton Moore several years earlier. Moore wasn’t just collecting talented players either. He was uniting them at the lowest levels of the minors, where they could play video games and cards together, go out at night together (years before they could legally buy a drink), sleep on the bus together, and learn the game together.

“In the minor leagues you don’t really have anybody else,” Duffy said. “You spend more time with these guys than with your own family. Hosmer is one of my best friends. Same with Moose. Same with Salvy, and so forth. That’s not only because of what we’ve done here (in Kansas City) but the road we took to get here.”

In a game where it’s hard to find one or two good major leaguers in one year, Moore signed Perez and Herrera as 16-year-olds in 2006, the same year he lucked into Dyson in the 50th round. The 2007 draft brought Moustakas (first round), Duffy (third round) and Holland (tenth round). Hosmer was added in the first round of 2008.

Duffy mentioned several others when recalling the wave of talent that came up around him, including Wil Myers, John Lamb and Mike Montgomery, each of whom was traded for key components of the championship club.

“I wouldn’t say we felt pressure. I think it’s exciting more than anything,” Duffy recalled. “We just had a good time playing. It feels, looking back, like it was one of the best Double-A teams ever. We were like 94-56 when you include the playoffs.”

Coming up together experiencing success is part of the process. Putting that many good players together should foster a winning culture that moves with them as they matriculate up the minor league ladder.

Moore is trying to replicate that wave again, and the ripple is currently building strength at Lexington, Kentucky, home of the Single-A Legends. The 2017 amateur draft brought a highly-regarded cohort that forms the foundation for the wave. First baseman Nick Pratto, catcher M.J. Melendez, pitcher Daniel Tillo and outfielder Michael Gigliotti, drafted in the first through fourth rounds, respectively, gave the farm system an instant boost. After getting their feet wet in rookie ball, the quartet, plus seventh round pick outfielder Brewer Hicklen, moved up to Lexington this spring.

The 2018 draft, heavy on college pitchers, doubled the size of the wave instantly. Added to the group at Lexington during the summer were pitchers Jackson Kowar and Daniel Lynch and outfielder Kyle Isbel.

The prospects from those two drafts are teamed with a handful of international signings including sensational outfielder Seuly Matias, who leads all of minor league baseball in home runs. In all, Lexington served as home to 13 of the Royals’ top 30 prospects, including six of the top 10. They have nearly every position covered, apart from second and third base, with a top 30 prospect. And they have six top 30 pitchers.

As happened with Duffy and friends, the Lexington wave is experiencing winning. The Legends, who finished their regular season schedule on Labor Day, are currently battling in the South Atlantic League playoffs.

“Learning to win together is a big part of it,” said Duffy. “We won in the Midwest League, we won in the Texas League, we won in the Pacific Coast League three times. We were pretty successful in the minor leagues. Fortunately it translated to the big leagues. We won a World Series and almost another one.

“It’s not about the kind of players they are, but how great these guys are, how good these people are off the field. I have no doubt that Dayton is going to put together the same type of clientele as far as character goes.”

Duffy has seen the majority of the players making up his wave depart over the years. Only he and Perez remain. He admits it’s hard to watch players you’ve grown up with go their separate ways.

“My advice to (the Lexington team) would be just to enjoy every moment of it, because it goes by really quick. Once you get here, you start seeing people part ways. So just enjoy your time together because that’s what it’s all about.

“It happened very fast. I had a lot of people telling me it would go by really quick, and yet you don’t see it until it’s gone.”

The Lexington wave will take time to arrive. Most of those players will advance just one rung of the minor league ladder per year. That means you won’t see most of them on your TV any sooner than 2021.

Duffy said he would encourage the next wave to try to soak up each day, while still keeping the end goal in mind and working hard towards it.

“You’re always looking to get to the big leagues. That’s your number one goal and the destination. But there is something to be said for trying to just enjoy where you are each day. I would tell those guys coming up to just enjoy every moment. Enjoy the Arizona days, even though they’re hot. Enjoy the 12-hour bus rides. Because it’s a simple time. It doesn’t seem like it in the moment, but you have a lot of fun in front of you if you just enjoy it.”