Utility players - Jared Triolo, Ji Hwan Bae
Delay and whoever is not starting at first base between Joe and Tellez will lock down two of the team's four bench spots. For the other two spots, Jared Triolo and Ji Hwan Bae (or Peguero if one of Triolo or Bae start at second base instead) would appear to have a leg up on the competition due to their positional flexibility.
Triolo can play all four infield positions and can do so at a high level. Bae can play shortstop, second base, and is the best defensive center fielder on the 40-man roster. While Bae has his offensive shortcomings (24.8% strikeout rate, 66 wRC+, .081 ISO, 67 OPS+), his glove, especially the ability to put him in center field over Suwinski late in close games, could land him on the Opening Day roster for a second consecutive season.
While it came on the back of an unsustianably high batting average on balls in play, Triolo had a huge month of September at the plate for the Bucs. Combine this with his plus to elite defense at multiple positions, and it's hard to not reward him with an Opening Day roster spot right now.