Dynasty: Franklin Arias. The FanRanked staff dynasty board has Arias ahead, Arias #46 and Gillen #67, but the expert consensus has Gillen ahead (#98 to #111). The community rates them even, FRV 53.0 and 50.9.
JD on Franklin Arias (Oct 21, 2026): I didn't just want to assume that I should be ranking prospects by their industry average slots, so I've been taking deep dives on every prospect that was in consideration for the top 50. I came away from that ULTRA-hyped on Franklin Arias, and I would hear arguments to have him number 1 overall. I'm not surprised the Red Sox were willing to get rid of Marcelo Mayer knowing they had this demon waiting in the wings. Arias tore up two levels of the minors this year, slashing .323/.406/.557 and hitting 25 homeruns across 520 PA. Potentially even more impressive were his swing decisions, with only a 14.2% K rate vs a 10.2% BB rate. For someone who put up this kind of power in the upper minors, its a rare skill set to have this combination of power, patience, and contact quality. I'll be honest, the swing is the one thing the concerns me. This is 100% an eye test take (so take it with a grain of salt) but the swing looks like it can get too long and loopy, and I'm not sure how it holds up at the big league level. It's one thing to rely on your raw athleticism when you are in the minors and velos and breaking balls aren't as good, but at the big league level if you have to cheat to catch up to velocity you are going to get exposed. I am really splitting hairs here, so don't let it dissuade you from treating Arias like the high quality asset that he is. Just don't be surprised when these elite K rates regress at the big league level and the average drops with it. One final note for what it is worth: Arias has the best 7 year projection of any prospect we track. A 2027 debut would be electric, and would expect him to see him after the ASB if things go right.
JD on Theo Gillen (Nov 5, 2026): Oh, do the Rays have another top prospect to salivate over? I can't help but think that Theo Gillen should have been getting at-bats in the playoffs for the Rays. The combination of DeLuca, Vilade, Williamson, and Walls feeling like automatic outs at the end of their lineup was ridiculous. Theo Gillen really took another step forward this year, hitting 22 home runs after hitting only 5 across his first two minor league seasons. That was really the one piece missing and the piece that I wasn't sure would ever develop when he was first touted as a top prospect. When you pair that with a .968 OPS and a double-digit walk rate, he looks like he will be a mainstay in the big leagues for years to come. I feel like Carson Benge is a pretty good comp to Gillen. I think if he gets a full season of at-bats next year, he could put together a similar standout rookie campaign. That would catapult him into (or close to) the top 25 dynasty rankings at the end of 2027 heading into 2028.
Data as of . Consensus boards refresh daily; the staff board moves when it is republished.
| Metric | Franklin Arias | Theo Gillen |
|---|---|---|
| Team | BOS | TB |
| Position | SS | OF |
| Age | 20 | 21 |
| Staff Dynasty Rank | #46 | #67 |
| Dynasty Consensus Rank | #111 | #98 |
| Redraft Consensus Rank | - | - |
| Prospect Consensus Rank | #4 | #10 |
| FRV (FanRanked Value) | 53.0 | 50.9 |
| Expert Sources | 30 | 30 |
| Dynasty Rank Range | #51–#393 | #40–#203 |
| 2027 Projected Value | -$16.0 | -$19.8 |
| 2026 $ Earned | - | - |
| 2027 Projected Rank | #1496 | #1636 |
| 30-Day Consensus Move | No move | Up 7 spots |
Price a Franklin Arias-for-Theo Gillen trade in the Dynasty Trade Calculator · compare their 2027 dollars in the Roto & Redraft Trade Analyzer