David Phelps was traded 4 times:

Acquired: $0.00 - Sent: $11,541,425.00 = $-11,541,425.00
Acquired: 199 G - Sent: 736 G = -537 Games
Acquired: 177 - Sent: 1879 = -1702 Plate Appearances
Acquired: 1863.0 - Sent: 737.0 = 1126.0 Innings Pitched
Acquired: $0.00 - Sent: $4,600,000.00 = $-4,600,000.00
Acquired: 114 G - Sent: 11 G = 103 Games
Acquired: 89 PA - Sent: 0 PA = 89 Plate Appearances
Acquired: 990.0 - Sent: 26.0 = 964.0 Innings Pitched
Acquired: $0.00 - Sent: $2,500,000.00 = $-2,500,000.00
Acquired: 20 G - Sent: 48 G = -28 Games
Acquired: 0 - Sent: 0 = 0 Plate Appearances
Acquired: 107.0 - Sent: 51.0 = 56.0 Innings Pitched
Acquired: $0.00 - Sent: $1,250,000.00 = $-1,250,000.00
Acquired: 0 G - Sent: 10 G = -10 Games
Acquired: 0 - Sent: 0 = 0 Plate Appearances
Acquired: 0.0 - Sent: 23.0 = -23.0 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.