One top Red Sox prospect landed on the injured list Tuesday while another took a step closer to returning from it.
Worcester first baseman Triston Casas, who is ranked the No. 2 Red Sox prospect by Baseball America, was placed on the seven-day injured list, retroactive to Sunday, with a sprained ankle.
Casas, 22, who has been out since May 17, is making progress but the Red Sox do not want to rush him back. He could return as soon as this weekend for games at Lehigh Valley. Casas is hitting .248/.359/.457 with 6 homers in 36 games for the WooSox.
Advertisement

Top prospect Marcelo Mayer, meanwhile, saw a hand specialist and received encouraging news about the sore right wrist that has limited him to four games since April 23. An MRI confirmed the diagnosis of a sprain, according to farm director Brian Abraham, and Mayer is expected to resume baseball activities soon.
Mayer, 19, is hitting .333/.386/.507 for Single A Salem.
WooSox starter Connor Seabold was also placed on the injured list with a pectoral strain. He has been out since a dazzling performance in May 15 – six shutout innings in which he allowed one hit and struck out 11 – and will miss at least one additional start while resting the injury. The 26-year-old is 3-1 with a 2.45 ERA in seven starts for the WooSox.
Alex Speier can be reached at alex.speier@globe.com. Follow him on Twitter at @alexspeier.