Padres pitcher Fautino De Los Santos
Houston Astros pitcher Sergio Escalona
Yankees outfielder Fernando Martinez
Seattle Mariners catcher Jesus Montero
Free agent pitcher Jordan Norberto
Detroit Tigers shortstop Jhonny Peralta
New York Mets outfielder Cesar Puello
Mets infielder/outfielder Jordany Valdespin
De Los Santos, Escalona, Martinez, Montero, Puello and Valdespin are currently on minor league rosters.
In written statements, several teams said they backed the league's decision.
Cruz said he had made an "error in judgment" after an infection left him concerned about whether he would be physically able to play.
"Faced with this situation, I made an error in judgment that I deeply regret, and I accept full responsibility for that error. I should have handled the situation differently, and my illness was no excuse," he said.
"I look forward to regaining the trust and respect of the Rangers organization, my teammates, and the great Rangers' fans, and I am grateful for the opportunity to rejoin the team for the playoffs."