Max Scherzer received a cortisone shot to treat the inflammation in his right thumb, the future Hall of Famer told reporters (including Ben Nicholson-Smith of Sportsnet). The Jays will have a better idea of when he could return after they see how he responds.

Scherzer’s thumb has bothered him back to last summer, when it was linked to some kind of nerve problem in his hand. The injury resurfaced this spring. Scherzer opened the season on the active roster but departed his first start in a Jays’ uniform after three innings and 45 pitches because of lat discomfort. The three-time Cy Young winner said postgame that the thumb was the cause of his other issues. “My arm is making adjustments because of that. That’s a recipe for disaster,” he told reporters on Saturday.

The Jays placed Scherzer on the injured list the next day. It’s a frustrating situation for the righty. Scherzer acknowledged on Tuesday that he has had conversations with doctors about the potential for surgery, but he said they’re “not even close to that” scenario right now (via Hazel Mae). He added that he’s hopeful he can begin playing catch again as soon as Friday.

Toronto has an opening in their rotation around Kevin Gausman, José Berríos, Chris Bassitt and Bowden Francis. It initially seemed that Yariel Rodríguez would step into the starting five after beginning the season in the bullpen. Rodríguez has continued working in a leverage role since Scherzer’s injury. He fired a scoreless inning to earn a hold on Sunday. He came on tonight in relief of Berríos and tossed another inning (allowing one run) to pick up his second hold.

The Jays list left-hander Easton Lucas as their probable starter for tomorrow’s series finale against the Nationals. They’ll push Gausman to Friday, giving him six days rest early in the season. They’re off on Thursday but will begin a stretch of 13 consecutive game days between April 4-16. They’ll probably want a fifth starter by the middle of next week.

Tomorrow’s start will be the first in the big leagues for the 28-year-old Lucas. He has 18 1/3 career innings across 14 relief appearances between the A’s, Tigers and Jays. Lucas worked out of the bullpen for all but four of his 38 Triple-A outings last year. He combined for an impressive 2.75 earned run average with a 26.2% strikeout rate over 68 2/3 innings. Lucas worked mostly 1-2 inning stints, but he made a five-inning start during his final Triple-A appearance. He topped out at 2 2/3 frames in a game in Spring Training, so they’ll likely lean heavily on the bullpen behind him tomorrow. Rodríguez, Jake Bloss and non-roster veteran Eric Lauer are alternatives if the Jays want to turn to a more traditional fifth starter next week.