USL Championship
- 21O
- 21W
- 21S
90% or more have a feeSome have a feeNo fee recordedS summer, W winter, O other dates
2021-22 ยท Summer window
By club
- Hartford Athletic1 in0 out
- Las Vegas Lights0 in1 out
- Oakland Roots1 in0 out
Sources: Wikipedia (CC BY-SA 4.0), API-Football ยท Data sources