So I was perusing Rex Brothers' FG page, and if you want reason for optimism, back when he was good with the Rockies, he threw just over 50% of his pitches in the zone. This year he's right back to that level. HOWEVER, the most he's ever been in the zone was 2017 with the Braves, and he got smacked around. So it'll still take some time to find out if he can get back to throwing an adequate number of strikes AND limiting contact. I'm certainly happy to give him another few weeks as the second lefty.