Alfaro, ranked No. 7 on the list of Texas' Top 20 prospects, is on the disabled list for the second time this season with a strained hamstring and has started catching bullpen sessions as part of his rehab.
"I'm just trying to get better and get back to the league," Alfaro said. "I am just hoping to get back in two or three weeks. It depends how my rehab goes."
Alfaro, 18, was originally placed on the DL after straining his hamstring on April 12. He returned to action 11 days later and was placed on the DL again after reaggravating his hamstring while running out a triple in his first game back.
Overall, Alfaro is hitting .290 with four RBIs in 31 at-bats in eight games for the Crawdads this year. He hit .300 with six home runs and 23 RBIs for Class A Short Season Spokane last season.
"He's been good here, and from all the reports I hear in Hickory, he has been good," Arizona Rookie League Rangers manager Corey Ragsdale said. "We are looking forward to getting him into games soon, and we are looking forward to watching him swing the bat."
Padres injury bug: The Padres' system has been hit pretty hard lately with a pair of former Rangers hitting the DL. Joe Wieland (No. 7 on the Padres' Top 20) was put on the big league disabled list with a tight elbow. Down in Double-A, Robbie Erlin was shelved, as well. Erlin, the lefty who came with Wieland in last summer's Mike Adams trade, was put on the DL with tendinitis. Right-hander Joe Ross (No. 10) hit the DL with shoulder tightness, and shortstop Jace Peterson (No. 19) was sidelined due to a concussion following an on-field collision with a teammate.