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Danny Jansen, C, Toronto Blue Jays (Double-A New Hampshire)
Jays’ prospect Danny Jansen has had a pretty pedestrian career to this point. Entering 2017 you would struggle to find him on any top prospect lists. However, Jansen has exploded so far this season, earning a promotion to Double-A New Hampshire as the 22-year-old catcher crushed High-A offerings and is doing more of the same in the northeast. Behind the plate Jansen has an above-average arm and looks to have the tools to stay back there. At the plate Jansen features a very flat, pullish type swing that struggles to get the ball in the air consistently and results in a lot of pulled ground balls or flares to right as he doesn't have a swing path to drive balls that direction. If he can home in the direction of the swing and add a little loft, Jansen could be a nice sleeper prospect for the Jays. —Derek Florko
Jonathan Davis, OF, Toronto Blue Jays (Double-A New Hampshire)
Coming off a breakout performance at Single-A Dunedin, the 25-year-old outfielder showed some skills that could translate to the major-league level. At just 5-foot-8, Davis possesses sneaky strength for his small frame. He uses his compact stroke and slightly above-average bat speed to drive the ball pull side when he’s at his best. Davis also keeps his weight back, while using enough leverage on his swing path to project as a low/mid-teen home run hitter if given regular playing time in the big leagues. His hit tool is below average because of the stiffness in his swing and his problems with letting the ball travel to go with the pitch, which created some weak contact. The former 15th-round pick does have a patient approach at the dish and did not chase pitches that were out of the zone. Davis’ best tool is clearly his speed. I clocked him at 4.08 home to first from the right side with the speed being usable in game as well. Davis played center field in the series, but projects as more of a left fielder because of his subpar arm strength, although he does have the speed and tracking ability to cover a lot of ground in the outfield. However, his ability to make plays on the ball didn’t stand out. Davis does not project as a major league regular, but could certainly log major league service time as a reserve or spot starter of sorts because of his sneaky in game power and his ability to make a difference on the base paths. —Greg Goldstein
Jon Harris, RHP, Toronto Blue Jays (Double-A New Hampshire)
Heading into the season, I was most excited to see the New Hampshire Fisher Cats because its starting rotation would feature the Blue Jays’ top three pitching prospects: Harris, Sean Reid-Foley, and Connor Greene. Out of these three right-handers, Reid-Foley possesses the highest upside, but Harris appears to have the highest floor despite the rough start to his first Double-A season (5.79 ERA and 1.57 WHIP through 56 innings). Toronto drafted Harris 29th overall in the 2015 amateur draft, and he certainly looks like a prototypical starter although has surprisingly little remaining physical projection for someone listed at 6-foot-4 and 175 pounds.
Conner Greene, RHP, Toronto Blue Jays (Double-A New Hampshire)
Greene lit up the radar gun in this outing, hitting the upper 90s on multiple occasions in the middle-late innings, even touching tripe digits at a point in the start. The fastball lacks movement, however, which could explain the questionable strikeout totals given his outstanding velocity—though he did get his fair share of swing and misses on this day. The 22-year-old right hander also throws a changeup with fade and tumbling movement that has the potential to be above-average with quality velo separation (80-83). His curveball and slider lag behind, but at least one of them should become an average pitch in time. Still young, Greene came into the season as BP’s number four prospect on the Blue Jays top ten list, and it’s easy to see why, with his electric fastball and the athleticism he shows on the mound. His mechanics are a bit choppy with a hand stab leading to his three-quarters slot, but he finishes well and shows some fire when he makes a big pitch. There is some thought around baseball that he would be better served as a dominant late-inning reliever because of some command/control issues and lack of a clear third offering. However, I’m buying into him as a starting pitcher. His fastball makes up for his inconsistent control/command and his change has the potential to be above average with the curveball-slider combo being just good enough to keep hitters honest. I believe he has the potential to be a capable number three starter in a first division rotation. —Greg Goldstein