Each day of Wimbledon, Baseline will sum up the action with a photo gallery of the top surprises. 

1

Sharapova Struggles

On the eve of the 15th anniversary of her 2004 Wimbledon title, Maria Sharapova exited in the first round to world No. 88 Pauline Parmentier. It's made even more disappointing because Sharapova didn't even finish the match, retiring while down 4-6, 7-6 (4), 5-0 with a left forearm injury.

"I've had a history of a tendon in my left forearm flaring up. It happened today in the second set," Sharapova said. "I probably couldn't have gotten through the whole final set, but I did my best."

The loss is another setback for the five-time Grand Slam champion, who has played just five events in 2019 due to a right shoulder injury. 

2

A Royal Appearance

Royalty often comes to Wimbledon, but usually it's the final weekend and in the Royal Box on Center Court. On Tuesday, Kate Middleton, the Duchess of Cambridge, popped up on Court No. 14 to watch Harriet Dart beat Christina McHale. She was seated next to Kate Boulter, who's missing Wimbledon due to a back injury.

"I mean, it's pretty surreal," Dart said. "Any of you had the Duchess watch you guys play?"

3

Federer Starts Slow

Roger Federer lost his opening set against Lloyd Harris, who must have felt like he was dreaming. The South African is a 22-year-old who only broke into the Top 100 this year. He started off hot, but eventually, the 20-time Grand Slam champion found his rhythm and ran away with the match, 3-6, 6-1, 6-2, 6-2.

4

Kyrgios Closes

When Nick Kyrgios lost the fourth set without winning a game against fellow Australian Jordan Thompson, the match seemed over. Instead Kyrgios bounced back, and held it together long enough, to win, 7-6 (4), 3-6, 7-6 (10), 0-6, 6-1. Next, Kyrgios will get to face off against world No. 2, Rafael Nadal. 

5

Americans Smash Through

Following on the heels of six straight-set wins by Americans on Monday, Sam Querrey, Taylor Fritz, Tennys Sandgren, John Isner and Steve Johnson all advanced on Tuesday. Querrey, a Wimbledon semifinalist in 2017, came through with the biggest scalp by beating No. 5 seed Dominic Thiem. Sloane Stephens, Lauren Davis, Amanda Anisimova, Taylor Townsend and Serena Williams all won without losing a set. 

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