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September Will Make or Break Trent Grisham’s Next Contract
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It’s not uncommon for an MLB player to see their production rise as they hit the prime years of their late 20s. Similarly, every year there are players who break out in the year before free agency hoping to parlay things into a big, new contract.

Over in the Bronx, the New York Yankees have an outfielder who is falling into both categories. And the difference in offensive numbers from his previous seasons to now is one that few outsiders likely expected.

Trent Grisham had generally been known as a defense first, offense second player upon arriving in New York last season. His first season with the Yankees didn’t do much to change that sentiment.

Grisham only played in 76 games last year as the team’s fourth outfielder and slashed just .190/.290/.385 with a 93 wRC+. Amazingly, none of those numbers were career lows for the former 15th overall pick.

Through the first six seasons of his career, Grisham had a slash line of .213/.313/.384 over 623 games. He could periodically come up with some big hits, as his 97 doubles, 70 homers, and 246 RBIs attested to, but he was certainly no middle of the order threat.

But his glove was reason enough for him to continue earning playing time. Grisham won two Gold Glove awards prior to being traded to the Yankees, each with the San Diego Padres in 2020 and 2022.

Thus, Grisham was back at it for the Yankees this season and this time getting more playing time than last year. And wouldn’t you know it, he got off to a nice, productive start at the plate. And then he just….stayed that way.

Grisham has already set career highs for a number of offensive categories and is on pace to do so for several more. And if he can keep it up for one more month, it could quite literally pay off for him in a big way.

All stats updated prior to games on Monday, September 8

September Is Going to Make or Break Trent Grisham’s Upcoming Contract

Among the numbers that are already career highs for Grisham this year are his 30 homers, 75 runs scored, 64 runs driven in, and 69 walks.

Rate starts are trending in that direction as well. His .475 slugging percentage, .825 OPS, and 131 wRC+ are on well track to be career bests by a wide margin. The lowest strikeout rate of his career (22.4%) and highest walk rate (13.6%) could have something to do with that.

Those numbers place him among the best outfielders in all of the American League. For the season, Grisham ranks 11th in fWAR (2.9), ninth in slugging percentage, and fourth in wRC+ among qualified AL outfielders.

Now previously, Grisham would get off to solid starts at the plate only to fade as the season went on and finish with subpar numbers. His .328 OBP, .434 slugging, and .762 OPS splits in March/April are higher than any other month for his career while his .223 average is second highest only to June.

However, he has been much more consistent in 2025. Outside of a small dip in June, Grisham has had an OBP above .350, a slugging percentage above .400, and an OPS over .700 in every other month this season.

Perhaps this is a matter of him finally reaching his true potential. The 15th overall pick of the Milwaukee Brewers back in 2015, Grisham had been developing slowly before a breakout 2019 season in the minors resulted in a late season call up to the Crew.

Grisham would play in 51 games for Milwaukee that year and then was traded to San Diego in the offseason. He would play in 496 games with them over four seasons, but his bat never quite came around there and he was traded once again, this time to New York.

That brings us to 2025, where Grisham has, surprisingly to many, been a top offensive weapon for the Yankees. And they will need every last bit of offense they can get from him as they try to close a four-game gap behind the Blue Jays for the AL East title.

As good as he has been this year, though, this final month will truly be key. If he comes back to earth, teams may believe that’s who he was all along and his earning potential could plummet. If he does what he’s done all season, it could unlock a much bigger contract than he was expected to get before this season began.

This article first appeared on Just Baseball and was syndicated with permission.

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