Konta downs No. 7 seed Stephens in Rome
The British No. 1 lost a tightly contested first set — which lasted more than an hour — in a tiebreak, but recovered to level the match and then ease through the third and final set against the 2017 U.S. Open champion.
Konta will face Venus Williams in the third round later on Thursday. The American was scheduled to face Serena Williams in the second round, but the younger Williams sister withdrew from the tournament with a knee injury.