Formula One champion Max Verstappen won a "cat and mouse" Belgian Grand Prix sprint on Saturday in Red Bull's first race under the leadership of Laurent Mekies following Christian Horner's dismissal.

McLaren's championship leader Oscar Piastri finished second, after taking a dominant pole position for the 100km race, with the Australian increasing his advantage over teammate Lando Norris to nine points.

Norris ended up where he started, in third place on a bright afternoon at the longest and second fastest track on the calendar. Charles Leclerc was fourth for Ferrari with Haas's Esteban Ocon fifth and Carlos Sainz sixth for Williams.

Haas's Oliver Bearman and Racing Bulls' Isack Hadjar completed the scoring positions. Qualifying for what could be a soggy main grand prix at Spa-Francorchamps on Sunday followed later.

"Well done Max. Very, very impressive defence, very well controlled. You didn't leave anything on the table there," Mekies told Verstappen over the team radio after the Dutch driver took the chequered flag.

Verstappen, starting second, used straightline speed to slipstream into the lead at les Combes on lap one and held off Piastri for the remaining 14, with the Australian 0.753 seconds behind at the flag.

The win was Verstappen's first, in either a sprint or grand prix, since Imola in May and it was knife-edge all the way. "I knew of course it was going to be very tough to keep them behind.

So it's just playing like cat and mouse, DRS, battery usage," he said as the large contingent of Dutch fans celebrated.

"The whole race was within seven tenths, so I couldn't afford to make big mistakes. I had one tiny lockup in the last corner, but apart from that it was, for us, a great result to keep them behind.

"You have to drive over the limit of what's possible. Tyre management goes out of the window. I did 15 qualifying laps to keep them behind on a track where tyre management is important."

Piastri had few real chances — close enough to hope but too far to make a move stick.