For a 1B? Big bat. For most positions, a player’s strengths should be in 2 of the following 4 components: * OBP * XBH * Defense * Speed Positions up the middle require that the players’ strengths are speed and defense. To quantify “defense”, arm strength is a factor - in addition to solid glove. For a corner IF, speed is less necessary than say a SS or CF. A 1B can at times go a WEEK without making a necessary full-effort throw (therefore not a position which requires elite defense). 1B is absolutely a position where OBP and XBH (or OPS) are arguably the most important. Essentially, it is probably the best position to “hide a bat”. For the reasons listed above, Grossman (OBP only) is not good for an OF. Joe Mauer’s best skills since 2014 (back in the days when he was a player), were defense (arm & glove) + OBP. Mauer was therefore poorly utilized when placed at 1B.