The ornamental design for a baseballglove, as shown and described.
1. Baseball glove
1.1: Perspective
1.2: Front
1.3: Back
1.4: Left
1.5: Right
1.6: Top
1.7: Bottom
The broken lines form no part of the claimed design; the dash-dot-dash lines indicate merely boundaries between the parts for which design registration is sought and the other parts.