Adell, whom the Angels grabbed with the No. 10 overall selection, entered the Draft with concerns about his ability to hit, but that didn't appear to be the case in his professional debut.
"He's proved some of the issues he may have had at the plate were overblown and a lot of it is a credit to our scouts, to identify what they thought was going to be a future plus for him was his ability to hit and standing by that with conviction," Angels director of amateur scouting Matt Swanson said. "We're thrilled with where he's at in his career at this point."
The 18-year-old hit .288 through 31 games in the Rookie-level Arizona League, then turned it up a notch slashing .376/.411/.518 through 18 games after he was promoted to Orem.
"I would say he's met and exceeded everything we thought internally going into the Draft and then obviously once he signed and started his career, I don't think we could have asked for much more at the plate."
Adell, along with Angels No. 5 prospect Jacob Pearson, a third-round pick, is one of several high selections at instructs. Although the players got a brief introduction to pro ball via game experience, instructs provides the Angels a chance to really oversee everyone and help ease the transition.
"The first six months or year of pro ball is really challenging for a lot of guys," Swanson said. "Not only whether they succeed or fail on the field, but getting to know people as well. And for the first time, this is really their career, where their responsibility is becoming a Major League Baseball player."
While Adell's pro debut impressed Angels' brass, Canning's will have to wait. The 21-year-old slipped in the Draft after concerns arose with his medical report and after pitching 119 innings during the spring with UCLA, the Angels opted to hold him out of game action.
Once Canning gets on the mound, the Angels have lofty expectations as Canning throws four quality pitches, including a plus changeup and a fastball that sits in the low 90s and can touch 95 mph.
"Everything is good to go," Swanson said. "He's 100 percent ready to go next spring. He's taken the last couple of months and trained heavily with our guys in Arizona and really developed his strength and his athleticism."
William Boor is a reporter for MLBPipeline.com. Follow him on Twitter at @wboor. This story was not subject to the approval of Major League Baseball or its clubs.