Daniel Bard has not appeared in a Grapefruit League game since Feb. 25 against the Rays in Port Charlotte. It is the only Grapefruit League game in which he has pitched this season, along with an exhibition game Feb. 21 against Northeastern. The Red Sox preferred to have him work on his mechanics on the side before getting back into a game.

The right-hander, whose disastrous attempt at joining the starting rotation last season led to his demotion to Triple-A Pawtucket in June, had been expected to appear in Monday’s game, when the Sox host the Rays.

Instead, he will continue to work on the side, throwing about 20 pitches in a simulated game on Monday.

“Some of the work he did in his side session the other day, we’re going to have him throw against hitters to look to reproduce and repeat the delivery with the slight adjustment with his stride direction,” manager John Farrell said. “So that’s the setting tomorrow for him.”

The Sox prefer the benefits of having a sim game compared to an actual game as Bard continues to tweak his mechanics.

“More controlled setting and again to continue to focus on the stride direction,” Farrell said. “We’ll probably look to get 20 pitches in a [sim game] tomorrow.”