The Royals announced that shortstop Adalberto Mondesi will undergo lshoulder surgery that will keep him from baseball activties for five to six months. The club hopes he can make a return by Opening Day of 2020.

Royals trainer Nick Kenney says Adalberto Mondesi will undergo left-shoulder surgery likely next week. Surgeon is TBD. Recover time 5-6 months, hope is for him to be back Opening Day 2020. — Alec Lewis (@alec_lewis) September 25, 2019

Mondesi initially injured his left shoulder diving for a foul ball in mid-July against Chicago, suffering a subluxation. That injury kept him out for six weeks, with Mondesi returning when rosters expanded in Septemer. Upon his return, Mondesi was instructed not to dive for ground balls or dive head-first on the base paths. Nonetheless, Mondesi dove for a ground ball to his right in a game last weekend against the Twins, re-injuring the shoulder.

Mondesi just went down with an injury to his previously injured shoulder pic.twitter.com/yQL5B2jqOA — Shaun Newkirk (@Shauncore) September 22, 2019

The 24-year old Mondesi was in his first full season in the big leagues, hitting .263/.291/.424 with 43 steals and a league-high 10 triples. He was worth 2.5 WAR in 102 games, according to Baseball-Reference.