Wimbledon 2016: Serena Williams advances, Andy Murray carries hopes of a nation

Wimbledon reigning champion Serena Williams appeared a little flustered in her first-round match Tuesday, but eventually dispatched Swiss qualifier Amra Sadikovic in straight sets to advance to the second round.

Williams, who is seeking her 22nd major title, started off slow, losing three of the first four points of the match. But Williams overpowered her opponent to win 12 straight points on her way to a 6-2 first-set victory.

In the second set, Williams made several unforced errors while hitting four double-faults, and was clearly frustrated. She screamed at herself and flailed her arms in attempts to psyche herself up.

The strategy worked and Williams went on to win the second set, 6-4.

"I never underestimate anyone," Williams said on the BBC of Sadikovic.

Next up for Williams in the second round is fellow American 24-year-old Christina McHale. Ranked No. 65, Williams has fended off McHale in both matches they have played.

Another American woman was on the court early Tuesday.

Alison Riske took six-seed Roberta Vinci of Italy to three sets before falling 6-2, 5-7, 6-3.

Second-seed Great Britain's Andy Murray, who carries the hopes of a nation every year at Wimbledon, easily advanced (6-2, 6-3, 6-4) to the second round against fellow countryman Liam Broady.

It took Murry only 1:42 to move on to the next round. He hit eight aces and controlled the game at the net, winning 18 of 19 times.

Murray hit 31 winners; Broady only 17, while Murray had only 18 unforced errors compared to Broady's 22.