Top Rangers catching prospect Jorge Alfaro has suffered an ankle injury that could keep him out for the rest of the season, Evan Grant of the Dallas Morning News writes. Alfaro is currently wearing a walking boot, and the Rangers are considering surgery as an option.

MLB.com currently ranks Alfaro the Rangers’ second-best prospect (behind Joey Gallo) and the 38th best prospect in baseball. ESPN’s Keith Law ranked Alfaro the No. 35 prospect in baseball heading into the season, while Baseball America ranked Alfaro No. 67. Alfaro, who turned 22 yesterday, has hit .253/.314/.432 for Double-A Frisco this year. He has outstanding tools, including terrific power and a huge arm, although Law notes that he has at times struggled to control them. Alfaro might therefore need the minor league development time he’ll lose as a result of the injury more than many prospects of his caliber would.

Early in the season, Alfaro’s name came up as a possibility in trade rumors involving Cole Hamels, as the Phillies reportedly coveted Alfaro. Other reports at the time, however, indicated that the Rangers preferred not to trade him.