Stanislas Wawrinka Showing how to Cover a Passing Shot - Wawrinka vs Dominic Thiem at Mutua Madrid Open Wawrinka sees the opportunity to attack. He hits a nice slice backhand approach and attacks the net running in the direction of his approach shot. Therefore, positioning himself perfectly to cover the passing shot. Thiem chooses the down the line passing shot and Wawrinka is ready. | TennisGate.com