O'Brien teamed with Simon Burnett , Gavin Meadows , and Ross Davenport in the final .
O'Brien swam a third leg and recorded a split of 1 : 49.05 .
Teaming with Simon Burnett , Gavin Meadows , and Ross Davenport in the final , O'Brien swam a third leg and recorded a split of 1 : 49.05 .