New father Vinales puts Yamaha fastest during FP1 for the Italian Grand Prix, the first competitive MotoGP session held at Mugello since 2019.

Zarco jumped to a late second place to split the inline four-cylinder domination, albeit after a slipstream on his final lap.

Aleix Espargaro is riding for the first time since arm pump surgery.

Injured rookie Jorge Martin is being replaced by Ducati test rider Michele Pirro. Marc Marquez, sidelined for nine months after complications to a broken right arm at Jerez last July, is taking part in his fourth event since returning to MotoGP action.

The official MotoGP top speed record is 362.4km/h (225.2mph) set by Zarco in Qatar earlier this year.

With Mugello missing from last year's calendar, the current rookies (Marini, Bastianini and Savadori) plus the 2020 rookies (Binder, Alex Marquez and Lecuona) are all competing at the track for the first time in the premier-class.

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Italian MotoGP, Mugello - Free Practice (1) Results
1Maverick ViñalesSPAMonster Yamaha (YZR-M1)1'46.593s19/20347k
2Johann ZarcoFRAPramac Ducati (GP21)+0.209s18/18356k
3Alex RinsSPASuzuki Ecstar (GSX-RR)+0.359s18/19347k
4Joan MirSPASuzuki Ecstar (GSX-RR)+0.583s19/19350k
5Franco MorbidelliITAPetronas Yamaha (YZR-M1)+0.591s18/18344k
6Francesco BagnaiaITADucati Team (GP21)+0.593s18/18353k
7Michele PirroITAPramac Ducati (GP21)+0.962s16/16354k
8Fabio QuartararoFRAMonster Yamaha (YZR-M1)+0.973s6/18348k
9Jack MillerAUSDucati Team (GP21)+1.123s20/20353k
10Miguel OliveiraPORRed Bull KTM (RC16)+1.155s10/17353k
11Takaaki NakagamiJPNLCR Honda (RC213V)+1.198s7/14345k
12Pol EspargaroSPARepsol Honda (RC213V)+1.277s16/18351k
13Aleix EspargaroSPAAprilia Gresini (RS-GP)+1.399s16/16351k
14Brad BinderRSARed Bull KTM (RC16)+1.456s7/18352k
15Luca MariniITASky VR46 Avintia Ducati (GP19)*+1.535s16/17347k
16Marc MarquezSPARepsol Honda (RC213V)+1.684s6/19350k
17Valentino RossiITAPetronas Yamaha (YZR-M1)+1.709s15/19347k
18Danilo PetrucciITAKTM Tech3 (RC16)+1.726s20/20352k
19Alex MarquezSPALCR Honda (RC213V)+1.782s6/19351k
20Lorenzo SavadoriITAAprilia Gresini (RS-GP)*+2.141s18/18343k
21Enea BastianiniITAAvintia Ducati (GP19)*+2.374s19/19348k
22Iker LecuonaSPAKTM Tech3 (RC16)+2.404s12/18345k

* Rookie.
Official Mugello MotoGP records:
Best lap:
Marc Marquez SPA Honda 1m 45.519s (2019)
Fastest race lap:
Marc Marquez SPA Honda 1m 47.639s (2013)

By Peter McLaren