WATCH: "Now on the tee... Jordan Day"
Sometimes first-tee announcers need a mulligan too...
Plenty happened on day one of the BMW Championship, which saw only half the 70-man field finish their opening rounds on Thursday due to bad weather.
There were hole-out galores, yet more Mickelson mastery, and a gaffe from the first-tee announcer when it came to Jason Day.
No big deal. He's only the world number one!
