Mr Hogg said students at schools in 46 states were participating.
Their goal is to have 90 per cent of the nation’s high schools host drives before the current senior class graduates in hopes of boosting young-voter turnout, which is traditionally low, especially during midterm elections.
He proved to be an avid supporter on the court, shouting encouragement from the stands and getting increasingly animated as games went on.
The pair announced their engagement in 2010, but called it off after the US Open just two years later.
Youth Over Guns, a gun violence prevention organisation in New York, organised the event, which attracted campaigners from the across the city, the state and beyond.
The group teamed up with March for Our Lives, the student-led organisation formed in the aftermath of the Parkland high school shooting in February that left 17 people dead.
ANOTHER fellow tennis player, Grigor Dimitrov and Sharapova got together after he saw her playing in 2013 - and 'decided to email her right away'.
The Bulgarian had formerly been with Maria's on-court nemesis Serena Williams, who refused to make a comment about the pair whilst they were together.
Thousands of young gun control activists have converged on New York’s Brooklyn Bridge, marching across the iconic structure in the latest effort to press for tougher regulations on weapons.
Ahead of her return we look back on her dating history, which includes a pop star, fellow tennis players and a TV producer.
And we reveal all about the man the Russian is currently rumoured to be seeing.
Sadly it wasn't to be and the pair broke up in the same year, with Ebersol eventually going on to date Britney Spears.
SHARAPOVA met Sasha Vujacic, a 6ft7 basketball player for the Los Angeles Lakers, in 2009.