Polish Open: Maja Chwalinska upsets top seed Niemeier to reach last 16
The Pole will play the winner of the match between qualifier Anna Siskova and Austrian Sinja Kraus in the next round

Polish wildcard Maja Chwalinska reached the last 16 of the Polish Open by beating German Jule Niemeier, the top seed, 4-6, 6-2, 6-3 on Tuesday afternoon.
Maja Chwalinska will play the winner of the match between qualifier Anna Siskova and Austrian Sinja Kraus next.