Rose sent crashing by Colsaerts
Justin Rose became the latest giant to be toppled at the Accenture Match Play Championship in Tucson on Friday.
One of the favourites for the title after the first round defeats of world top two Rory McIlroy and Tiger Woods, fifth seed Rose was beaten 4&2 by Ryder Cup team-mate Nicolas Colsaerts.
The Belgian won the Volvo World Match Play in Spain last year, had eight birdies and an eagle in his first-ever Ryder Cup game last September and began this week with a crushing 5&4 win over American Bill Haas.
Rose actually won the first hole, but he could not match his big-hitting opponent's birdie on the long second and by the seventh was already three down.
A birdie at the ninth and eagle on the 11th - both with 14-foot putts - hinted at a comeback, but the Englishman plugged his ball in a bunker on the next and Colsaerts hit his approach to two feet at the 14th.
The 15th was halved in birdie threes - Colsaerts drove the green on the par four - and it ended on the following green when Rose three-putted.
Following Wednesday's freakish snowstorm and then the loss of Thursday morning as well while the course was made playable, it was decided to play only the second round on Friday and then try to cram the last 16 and quarter-finals into Saturday.
The first round actually spilled into a third day, Swede Carl Pettersson overcoming Rickie Fowler at the 19th after the American had birdied the last two, while Spaniard Gonzalo Fernandez-Castano beat Italian Ryder Cup player Francesco Molinari at the last.
Europe's contingent became even smaller when Sergio Garcia lost to American Matt Kuchar 2&1.