I love magnum as much as anyone but he is just a aaaa player. You have to be really good (and usually good and young) to break into the majors.
In three seasons at tripe a Mangum has slashed .310/.353/.438 OPS.791 - 13HR, 43SB/15CS with 187 SO and 58 walks. Those are very good numbers without a doubt. But look at the minor league numbers for the guys ahead of him.
Josh Lowe (Nate’s brother) was a 1st round pick in 2016. 30 out of 30 MLB teams will give their top picks every chance to succeed due to the money invested. And in 2 seasons at triple a (with a short rehab stint last year) Lowe slashed .298/.385/.539 with an OPS of .924 - 39 HR, 51SB/2CS with 262 so and 109 walks. He has played in the majors for 3 years so those triple a numbers came when he was 23/24 vs age 26-29 seasons. It’s clear what Lowe is the on the major league roster.
Christopher Morel is in his age 25 season and went through the minors in his younger developmental years. Barely stopped in at tripe a bit in 39 games he slashed .313/.405/.647 with an OBP of 1.051 with 51 SO and 21 walks at age 22-23. He’s definitely got some swing and miss in his game at the major league level hitting .223 across three seasons but he has major league power already hitting 63 home runs. He is also a super utility guy that can play IF and OF and the Rays love that kind of player for roster versatility.
The third outfielder Jonny Deluca I honestly don’t know much about. Light hitting, drafted out of the university of Oregon in 2017. His offensive numbers across the board are pedestrian so I checked into his defensive profile and found why he is starting for the rays. In 2024 he was the 16th best major league outfielder in terms of outs above average. Go to baseball savant for a crash course on the stat but for context he was a slightly better defender than Michael Harris II and Julio Rodriguez.
So a home grown top prospect, a young international player with proven pop and a defensive wizard. The good but not great guy who is older than all three is just not going to force his way into that outfield. The minor leagues are full of guys that have major league work ethics, but just aren’t physically gifted enough to get a cup of coffee.