Adrian Lewis eased into the last 16 of the Ladbrokes World Darts Championship with a routine 4-1 win over Denis Ovens at Alexandra Palace.

The defending champion is bidding for a third world title on the spin and rarely had to move out of second gear as he booked a meeting with Kevin Painter in the next round.

Painter, the 2004 finalist, was a 4-3 winner in his clash with Ronnie Baxter, who hit 14 180s to his opponent's 11.

After sharing the first six sets, Baxter edged two legs clear in the decider. However, Painter won the next four legs without reply as he sealed his place in the third round.

Simon Whitlock progressed to the last 16 with a straight-sets victory over Colin Osborne.

Osborne managed just four legs in the contest as Whitlock put in an assured performance, including a 164 checkout.

Elsewhere, an in-form Wes Newton sealed a one-sided 4-0 win over Scott Rand in which he hit more treble 20s than he did singles.

Rand was powerless in the face of the onslaught by Newton, who ended the match with a three-dart average over 99.

Raymond van Barneveld continued his bid to regain the title with victory over Brendan Dolan.

Van Barneveld cruised through the first set before doubling his advantage, but Northern Irishman hit back to take the third.

Five-time world champion Van Barneveld edged the fourth on a deciding leg and took the next 3-1 seal his place in the last 16.

"I'm really happy to be through," said Van Barneveld. "I was pleased with how I played at the start but I lost my way for a while and my concentration seemed to drift."

Elsewhere, Colin Lloyd defeated Mark Webster 4-2 to seal his place in the last 16.