Tommy John was traded 3 times:

Acquired: $0.00 - Sent: $0.00 = $0.00
Acquired: 420 G - Sent: 1111 G = -691 Games
Acquired: 1615 - Sent: 2880 = -1265 Plate Appearances
Acquired: 0.0 - Sent: 4479.0 = -4479.0 Innings Pitched
Acquired: $0.00 - Sent: $258,750.00 = $-258,750.00
Acquired: 568 G - Sent: 765 G = -197 Games
Acquired: 2032 PA - Sent: 1638 PA = 394 Plate Appearances
Acquired: 189.0 - Sent: 4047.0 = -3858.0 Innings Pitched
Acquired: $0.00 - Sent: $0.00 = $0.00
Acquired: 20 G - Sent: 321 G = -301 Games
Acquired: 0 - Sent: 270 = -270 Plate Appearances
Acquired: 301.0 - Sent: 3508.0 = -3207.0 Innings Pitched
Transactions current as of 2021 season. See an issue with this player? Please report it.

Transaction and player information was obtained from Retrosheet.

View the site on Github.