PARADISE, N.L. - Rachel Homan couldn't extend her perfect run at the Grand Slam of Curling's Tour Challenge.

Switzerland's Silvana Tirinzoni scored two in the eighth end to edge the Ottawa skip 6-5 in the Tier 1 women's final on Sunday.

Homan got out to an early 3-0 lead in the second end and was up 5-2 before Tirinzoni came back with deuces in the seventh and eighth ends to take the victory.

Homan went undefeated at the inaugural Grand Slam of Curling event until losing to Tirinzoni in the final. She posted a 4-0 round-robin record to top the leaderboard, downed Scotland's Eve Muirhead in the quarter-finals and beat EunJung Kim of South Korea in the semis.

Tirinzoni was playing in her first career Grand Slam of Curling final. She went 2-2 in the round-robin stage before beating Edmonton's Kelsey Rocque and Tracy Fleury of Sudbury, Ont., in the quarter-finals and semifinals, respectively.

Later Sunday, Brad Gushue of St. John's, N.L., played Calgary's Kevin Koe in the men's Tier 1 final.

Gushue defeated Winnipeg's Mike McEwen 5-3 in Saturday's semifinal, while Koe downed American John Shuster 9-2.