World number three Jason Day holds the first-round lead at the Arnold Palmer Invitational at Bay Hill.
The Australian shot a six-under-par 66 to go clear of the field, one stoke ahead of compatriot Adam Scott who is bidding for a third successive win.
Justin Rose is in early contention at four under – helped by holing a 112-yard eagle at the third – as is fellow Englishman Paul Casey.
But Northern Ireland’s Rory McIlroy struggled to a three-over par 75.
Scott is aiming to become only the third player in 10 years – after McIlroy and Tiger Woods – to win three straight PGA Tour events.