She prevailed by . 78 of a second over two runs , after leading by . 27 after the first run .
Shiffrin , the world 's best slalom skier , notched her first solo GS win in Semmering , Austria , on Tuesday .
Shiffrin prevailed by . 78 of a second over two runs , after leading by . 27 after the first run .
Shiffrin , the world 's best slalom skier , notched her first solo GS win in Semmering , Austria , on Tuesday .