Former champion Sam Querrey locked horns with countryman Mackenzie McDonald for a place in the second round in Delray Beach - watch the full replay from Florida.
Mackenzie McDonald v Sam Querrey
Replay
Delray Beach
2021R1R1
Former champion Sam Querrey locked horns with countryman Mackenzie McDonald for a place in the second round in Delray Beach - watch the full replay from Florida.
