There wasn't a better pitching during spring training than San Francisco's Logan Webb, who went 2-0 with a 0.53 ERA in five starts. Webb's strikeout-to-walk ratio was 22-to-2.
So I'll take a shot with Webb and the superior team against the lowly Mariners, who will be going with Chris Flexen, who was pitching in South Korea last season. 
Sure spring training statistics can't be trusted. But still I'd rather go with a hot spring training pitcher than Flexen, who has never proven himself in the majors and has a horrendous bullpen behind him. Already the Mariners' relief staff has given up five runs (four earned) during seven innings.