Senegal found most superstitions to be stupid. If you were going to believe anything, you should at least have some physical proof of it having any connection with reality. However, the keyword there was 'most'. Though, if you asked him, he would tell you that what he believed wasn't superstition, but extremely specific and supernatural reality. Or, if he was feeling a bit more spiritual that day, a curse.
After all, what else would you call it when every time Senegal practiced or work...