FC Köln Frauen started the 2. Bundesliga Süd season with a 2-1 win over 1. FC Saarbrücken with Amber Barrett from Milford on target.
The breakthrough arrived just before the 20-minute mark, as Rinast played in Amber Barrett to coolly finish from close range.
Just before half-time, Saarbrücken managed to grab an equaliser. Leonie Stöhr crossed from the left and Taylor Cohen managed to poked in at the near post.
A superb move saw Islacker tee up Anja Pfluger, who found the bottom corner with a strong 20-yard drive.
Barrett almost had a third as she rounded the Chladekova, only to see her effort cleared just before the line.