Prince William is back on the field.
The polo match will raise money for Skillforce, for which Prince William is a patron, as well as the Royal Marsden Cancer Charity, of which the new dad is president, according to the Daily Mirror.
Prince William didn't travel too far away from his baby boy and wife Kate Middleton for the match-up though.
The couple is still staying at the Middleton's family home in Bucklebury, England, and the event was held in nearby Ascot at the Coworth Polo club.
The day before the polo match, Prince William and Kate formally registered their son's birth, signing the birth register at Kensington Palace Friday.
Once Prince William's paternity leave comes to an end next week, he is scheduled to head back to his duties as a search and rescue pilot in Anglesey, England, and appear at the Anglesey Show in North Wales in two weeks.