While the Red Sox test their eighth starting pitcher of the season in Hector Velazquez, the Seattle Mariners test their 10th starting pitcher of the season in Sam Gaviglio.
Who are these guys?
The Sox have gotten zero starts from projected starter David Price while the Mariners have gotten zero starts from projected starter Drew Smyly (who was once involved in a trade that included Price and the Mariners):
http://www.baseball-reference.com/players/p/priceda01.shtml#all_transactions_other
The Red Sox, 21-18, lead the American League in pitching fWAR while the Mariners, 19-22, are mired in second-to-last place:
http://www.fangraphs.com/leaders.aspx?pos=all&stats=pit&lg=al&qual=0&type=8&season=2017&month=0&season1=2017&ind=0&team=0,ts&rost=0&age=0&filter=&players=0
The much-maligned projected No. 5 starter for Mariners -- Yovani Gallardo -- is now Seattle's undisputed top-of-rotation starter with James Paxton, Felix Hernandez, Hisashi Iwakuma and Drew Smyly on the disabled list.