For the first time in more than 14 months, Jackson Jobe will take the mound in a major league game Saturday night.
There is plenty of reason for excitement. There is also plenty of reason to keep expectations in check.
Jobe returns from Tommy John surgery to start against the San Francisco Giants at Oracle Park, coincidentally the same opponent he faced in his final major league appearance before landing on the injured list last season. On May 28, 2025, Jobe allowed three runs over 4 2/3 innings against San Francisco before eventually being diagnosed with a UCL injury that required surgery. He finished his abbreviated rookie season 4-1 with a 4.22 ERA, 39 strikeouts and 27 walks in 49 innings.
The first thing to watch Saturday is simple: the velocity.
That part of Jobe's recovery has been encouraging.
Jobe touched 100.2 mph in his first rehab appearance with Lakeland in July and averaged 98.8 mph with his four-seam fastball in that outing, significantly higher than his 96.5 mph major league average in 2025. He has continued to reach 98-99 mph throughout his rehab assignment, including 99 mph in his most recent appearance with West Michigan.
So I am not particularly concerned about whether the arm strength is there.
I am more interested in whether Jobe can miss enough bats.
That was one of my concerns with him before the injury, and the numbers back it up.
Despite possessing some of the best raw stuff in the Tigers organization, Jobe produced only a 24.7% whiff rate in 2025, essentially league average. More importantly, hitters missed on just 14.2% of their swings against his four-seam fastball. For a pitcher throwing 96-98 mph with Jobe's pedigree, that isn't enough. The good news is that Jobe has a pitch capable of changing that equation.
His changeup generated a 44.1% whiff rate last season. Opponents produced an expected .255 wOBA against it, compared with a .385 expected wOBA against his four-seamer. His slider generated a 26.4% whiff rate, giving him another pitch capable of getting hitters off the fastball.
That is what I want to see Saturday.Not necessarily eight strikeouts. Not seven dominant innings. Not Jobe immediately looking like the former top-five prospect everyone remembers. I want to see how the fastball, changeup and breaking balls work together.
Does the additional fastball velocity make the changeup even more difficult to identify? Can he elevate the four-seamer and get hitters underneath it? Can he get ahead in counts without relying on hitters chasing? And once Jobe gets to two strikes, can he actually finish hitters? Those are much more important questions than his final pitch count.
There have been encouraging signs during the rehab assignment. Jobe has compiled a 1.76 ERA with 17 strikeouts in 15 1/3 innings across the minors. In his latest outing, he struck out five over four innings while again reaching 99 mph. Earlier in the assignment, he struck out four over four innings for Erie while sitting in the mid-to-upper 90s.
That's progress. Still, major league hitters present a considerably different challenge.
Jobe's 2025 season provided an interesting contrast. The overall results weren't disastrous, but the underlying profile did not always resemble the dominant starter his arsenal suggested he could become. He struck out only 39 of the 218 batters he faced while walking 27. His four-seamer was hit for a .296 average and .519 slugging percentage.
That is where the next stage of his development begins. There is also no reason to expect Jobe to suddenly carry a traditional starter's workload. The Tigers have treated his rehabilitation carefully, essentially building him up as if he were progressing through spring training. A.J. Hinch previously said Detroit would be conservative as Jobe worked toward five- and six-inning workloads following surgery.
So Saturday should be viewed as another step rather than the finished product. But it is an important step.
After trading Tarik Skubal and Casey Mize at the deadline, Detroit suddenly needs Jobe to become more than an interesting young pitcher coming back from surgery. The Tigers need to find out whether he can become a significant part of their rotation moving forward. I thought prior to the trade, they could put him in the bullpen.
The velocity appears to be back.
The arm looks healthy enough to compete. Now comes the question that has followed Jobe since he first reached Detroit: Can all that stuff consistently miss major league bats?
If we see 97-99 mph, strikes, a healthy dose of the changeup and slider, and more swings and misses than we saw from Jobe last season, I won't care nearly as much about whether his final line reads four innings and two runs or five innings and three. For his first major league start in 14 months, that would be a pretty successful return. It aligns when we talked to Scott Harris last season aka "he will be just fine".
Follow me on "X" @therogcast
