Martin, 23, is slashing .319/.390/.470 with eight stolen bases in 11 attempts across 187 plate appearances with Double-A Midland this season. The 2015 first-round pick was delayed to begin the current campaign while recovering from offseason surgery to repair a meniscus injury, but Martin hasn't shown any signs of poor health while repeating the Texas League. Though his power production remains unimpressive and dampens his outlook in dynasty formats, Martin has been an efficient base stealer and has shown improved patience at the plate, with his 9.3 percent walk rate representing his highest mark since short-season ball. He could earn a promotion to Triple-A Nashville at some point later this season.
Martin will not attend Athletics' spring training as he is recovering from right meniscus surgery, Jane Lee of MLB.com reports. Martin underwent offseason knee surgery after appearing in 109 games between High-A Stockton and Double-A Midland last season. Though he won't be able to attend big-league spring training this year, he is expected to be back to full strength by mid-March and should be ready for the start of the regular season. The young shortstop will likely open the year in Double-A, where he slashed .224/.306/.315 in 2017.
Martin is batting .245/.341/.367 in 147 at-bats this season for Double-A Midland. Martin has improved on each stop along the minors, including this season. If he were to keep his production constant, the .245 average and .367 slugging would both be his best over the span of an entire season, and he's on pace to record his lowest strikeout percentage at 18.7 percent. With that being said, the Athletics would probably still like to see more of an increase in offensive production before the season's end, but the improvement to this point is a good start for their 2015 first-round pick.
Martin was reassigned to minor league camp Sunday. Martin's playing time during spring training was limited, and he went 0-for-4 at the plate. Martin reached Double-A Midland near the end of the 2016 season, so look for him to return there to focus on improving his hitting at the start of the upcoming season. Since being drafted in 2015, the 22-year-old has yet to hit above .240.
Martin will be unavailable for the start of the minor-league season after undergoing surgery Monday to repair a meniscus, John Hickey of the Oakland Tribune reports. Martin, who was selected 20th overall by the A's in the 2015 first-year player draft, suffered the knee injury while sliding during spring training. The shortstop will likely settle in at the Low-A or High-A level when he's deemed healthy enough to play again.