For Novak Djokovic, this is a relatively easy call. He thinks the French Open is making a mistake by eschewing the electronic line-calling used at most big tennis tournaments and instead remaining old school by letting line judges decide whether serves or other shots land in or out.

All-time tennis grand slam champ Novak Djokovic gets his 2025 French Open underway on Tuesday with a first-round date against American Mackenzie McDonald.

Novak Djokovic endured windy, wet weather to get past American Mackie McDonald, 6-3, 6-3, 6-3 in first round French Open action Tuesday. Alexander Zverev also won, while Danil Medvedev lost after a nearly 4-hour match against Cameron Norrie.