Canada (6-3) and Scotland (6-3) clinched playoff spots but four teams remain tied for the final two spots with 5-4 records.

Pierce (North Syracuse, N.Y.) and teammates Augusto Perez (East Syracuse, N.Y.), Jimmy Joseph (Hartford, N.Y.), Danell Libby (Sprakers, N.Y.) and Mark Taylor (Deansboro, N.Y.) will now play Switzerland at 10 a.m. Friday with the winner grabbing a semifinal spot. Japan and Norway will play the other tiebreak game.

Korea scored one in the first end and stole another in the second end before Team USA tied the game with a deuce. Korea matched that effort but never scored again as the Americans scored one and stole one to force an extra end. USA was able to steal the extra end knocking Korea out of the playoff picture.

Team USA beat Switzerland earlier in the round robin, 8-5, and hopes to have the same result tomorrow. The USA's best finish at the Wheelchair Worlds has been fifth place - in 2002 and 2004.

Teams at the World Wheelchair Championship must be composed of a mix of men and women. No sweeping of the stone is allowed in competition. Rather, athletes rely upon arm strength and true aim. Games at the national and world level are six ends in length in accordance with the World Curling Federation's rules of play.

Line score:

*Korea            110 200 0          4
USA                 002 011 1          5

*last rock advantage

Standings:

*Canada          6-3
*Scotland        6-3
Japan              5-4
Norway            5-4
Switzerland     5-4
USA                 5-4
Korea              4-5
Denmark         3-6
Russia             3-6
Sweden           3-6
*clinched playoff berth

USA Curling is sponsored by AIT Worldwide Logistics, AmerAust Technologies and Nike as well as by AT&T, General Motors, The Home Depot, and Bank of America through a joint marketing program with the U.S. Olympic Committee.