Jonathan Isaac SF eligibility
1) Precedent: Isaac played nearly a third of his minutes at the 3 last season: 27% at SF; 73% at PF.
(https://basketballmonster.com/usagemonster.aspx). It’s worth noting that these percentages came in a season of Aaron Gordon playing only 58 games, which inflated Isaac’s time at the PF whenever Gordon was out. As you can see in the graph, Aaron Gordon played a whopping 98% of his minutes at PF, which anchors this claim to Isaac as a SF.
2) Internal confirmation: According to Magic official team reporter John Denton, Jonathan Isaac “will resemble a small forward on offense and a power forward defensively’ this season.” I’m not entirely sure what that means, but the official team reporter acknowledges Isaac as a SF...at least half the time, haha.
http://www.rotoworld.com/recent/nba/2781/jonathan-isaac (September 13)
3) 18-19 Starters: Josh Loyd of Locked On (among other sources) have projected that Orlando’s starters for this season will be Augustin, Fournier, Isaac, Gordon, and Vucevic. This is the lineup Steve Clifford rolled out in the Magic’s first preseason game against the Sixers (https://twitter.com/Magic_PR/status/1046875117811372033). This lineup necessitates that the slimmer Issac slide to the 3 while Gordon mans his natural position at the 4.
4) “Everyone else is doing it.” This isn’t an ironclad argument on its own, but it’s worth nothing that Jonathan Isaac is SF eligible on the fantasy basketball servers of ESPN, CBS, FleaFlicker, and Basketball Monster. FanTrax and Yahoo are the lone holdouts. You don’t want to be the last ones to join the cool kids’ table, right? :)
Moe Buckets commented
Johnathan Isaac should have PF and C added to his position eligibility. He plays every forward position including C. It is only right that it is fixed.