An example what happens if you don't follow your own rules was the match
Wawrinka - Baghdatis
The rule I didn't follow was:
Back fav after an early break against him, in WTA matches.
I tried to transport this rule to an ATP match. But in ATP one break is mostly enough to win the set. But seeing Baghdatis as a clear fav in this match, made me to back him after beeing braked in his first service game in set one. After he lost the set I took a stop loss to limit risk, leaving minimal profit on him. A whise decision (after a bad one backing so early), as he couldn't bring himself together and lost the match 6-3, 6-7, 6-0.
Lay Wawrinka 20 € @ 1.57
Back Wawrinka 19€ @ 1.35
Loss: 4,75€ (-41.6% ROI)
3 hours ago