Not precisely because of the wrist surgery he had in 2015. But…
Free agency. The year A.J. Preller has said San Diego will be a contender (2019), is precisely when Myers becomes a free agent, exactly at the age of 28 years. He would be commanding 8-10 years of at least 20 million dollars per, if he keeps up the production. That is a big “if”.
Production risk. The risk of a drop in production is a reality. He K´d at a 23.7% rate (160 times) with Matt Kemp & Melvin Upton in the lineup.
Sell high.Several teams are potential trade matches for the Padres. The Indians, Rangers, Astros, Marlins, Mets, Yankees, Pirates, are some just to name a few who would more than welcome an upgrade at first base or the corner outfield. Why not try getting, just to name a few players: Jurickson Profar, Alex Bregman, Amed Rosario, Gleyber Torres, Auston Meadows, etc.
Position hierarchy. There are other positions that deserve more attention, specifically the middle positions (C, 2B, SS & CF).
Team philosophy. This is the most important topic and is going to be addressed in another column.
Timing. Acquire AA or AAA players, who could make it to the majors next year, therefore ready to compete on 2019.
There are more reasons in favor of trading Myers than keeping him.