Anderson progresses in Memphis

Anderson was rarely troubled by his Australian opponent, winning all but one point on his first serve and not allowing Groth to carve out a single break point opportunity.

Bernard Tomic had considerably more success than his compatriot, downing fourth seed Alexandr Dolgopolov 6-1, 7-5.

What made the Australian's straight sets victory even more impressive is that he trailed 2-5 in the second set before fighting his way back into the set and then on to claiming the match.

Earlier in the day, Americans Donald Young and Steve Johnson progressed to the last eight, beating Denis Kudla and Dustin Brown respectively.