Today’s Prospect Injury report is a little lighter than usual, though fewer players to write about in this section is always a good thing.

Jason Knapp, rhp, Phillies: Knapp’s power arm has led to 111 strikeouts in 85 1/3 innings for low Class A Lakewood, but he’s had to give that arm a break as of late due to shoulder fatigue. While Knapp has collected strikeouts in bunches in the South Atlantic League, the 18-year-old’s ERA has been a bit erratic, along with his control. He’s averaging 4.1 walks per nine innings with a 4.01 ERA. In his last start on July 11 at Kannapolis, Knapp recorded just two outs before leaving the game with three walks, three hits, no strikeouts and six runs allowed. And from the unusual stat department: Knapp leads the minor leagues with five balks.

Zach McAllister, rhp, Yankees: McAllister is on the disabled list with a sore shoulder, though an MRI revealed no structural damage, according to The Times of Trenton. McAllister last pitched in a regular-season game for Double-A Trenton on July 11, when he gave up a season-high five runs in 5 1/3 innings at Connecticut. In McAllister’s 15 other starts this season, the 21-year-old has given up more than two earned runs in just one of them, leading to a 2.25 ERA in 92 innings with 75 strikeouts and 27 walks.

Cory Luebke, lhp, Padres: Luebke had surrended just one earned run in three starts since his promotion to Double-A San Antonio, but he had to leave his July 12 start at Tulsa with a right hamstring injury. Luebke, 24, spent most of the season taming the high Class A California League, where he left Lake Elsinore with a 2.34 ERA in 88 1/3 innings thanks in large part to his walking just 1.7 batters per nine at that level.

Aderlin Rodriguez, 3b, Mets: Rodriguez was the Mets’ top international signing last summer, but he has yet to appear in a game. According to Mets vice president of player development Tony Bernazard, Rodriguez was hit by a pitch during an extended spring training game and was wearing a cast that was only recently removed. It’s not clear whether Rodriguez, a 17-year-old from the Dominican Republic, will see game action this season.

Quick Hits: Good news here, as Phillies right fielder Dominic Brown returned from the DL and rejoined high Class A Clearwater. He had not played there since June 8 because of a broken finger in his right hand. He’s 8-for-9 with three walks since his return . . .Tigers first baseman Ryan Strieby returned to Double-A Erie on Monday . . . Reds first baseman Yonder Alonso could return to Double-A Carolina by early August.

Contributing: Matt Eddy