I was under the impression that wasn't the case, are the season opening option rules different from what is stated below?
"MORALES TO THE DISABLED LIST
The Blue Jays placed left-hander Franklin Morales on the disabled list with left shoulder fatigue. The club made the move retroactive to April 7.
Morales has appeared in two games for Toronto, throwing two-thirds of a scoreless inning. This leaves the Jays short another left-handed reliever at an inopportune time; the left-handed hitting-heavy New York Yankees come to town for a three-game series beginning on Tuesday night. Aaron Loup, on the disabled list with a left elbow strain to start the season, isn’t close to returning. “He’s still a little ways off,” said Walker. “He’s playing catch and feeling good; all those things are positive signs but he’s still obviously not in games yet.”
Another complicating factor is the 10-day option window to begin the season doesn’t expire until after Tuesday’s game. The Jays can’t recall players optioned at the start of the season, which includes potential left-handed relief help like Pat Venditte or right-hander Ryan Tepera, who the club likes in the righty-lefty matchups.
Someone not currently on the 40-man roster would have to be added should the Jays wish to make a move in time for Tuesday’s game. This is doable without making a 40-man deletion as 38 of the 40 spots are occupied."