China's He Guoqiang scored a superb 3-0 defeat of seven-time World Champion Ronnie O'Sullivan to top Group Two of the BetVictor Championship League in Leicester.
He made a huge impact in his maiden season as a professional last term, winning the Rookie of the Year award. He appears to have carried his form into the new campaign after earning his progression to stage two at the Morningside Arena.
Breaks of 80, 57 and 77 saw He score that massive win over O'Sullivan in the last game of the group, which helped him leap from third position into top spot. The 23-year-old did lose out 3-1 in his opening match of the day to Mitchell Mann, but a 3-0 win over Kayden Brierley gave him the opportunity to clinch the group with his win over the Rocket.
O'Sullivan's first outing of the season ends with an early exit. He had looked sharp in a 3-0 win over Brierley in his opening game, but let a 2-1 lead slip against Mitchell Mann in his second game to draw 2-2.
Group 12 saw six-time ranking event finalist Jack Lisowski get his campaign underway with a successful day, which saw him make the second stage. The Englishman was in fine form, top scoring with 138 in a 3-0 win over Ukrainian Anton Kazakov. He then crafted runs of 127 and 106 on his way to scoring a 3-1 defeat of Jiang Jun, before a 2-2 draw with Mark Davis secured top spot.
Play continues on Wednesday with the likes of Ali Carter and Zhou Yuelong in action.