I will never quite understand why Theo and Tito thought that Lopez was a lefty specialist.
There's a reason he's always been more effective against righthanders. A lefty siderarmer with a fastball-slider combo has to control the inside part of the zone to be effective against lefthanders and Lopez can't do that consistently. Without an effective inside pitch to lefties, the primary advantage of lefty on lefty is gone because it's pretty easy to follow that sweeping slider disappearing out of the zone away, especially when he usually misses pretty badly with it, and then sit on the fastball. Meanwhile with the same arsenal Lopez can saw overeager righthanders off with a slider in under the hands and then get them to chase two-seamers that disappear out of the strike zone away.