Soler is bad defensively and probably worse than a healthy Schwarber, but the last page or so definitely proves it can be overstated. Especially in this case where he can easily be pulled after his 2nd/3rd at bat to minimize time in the field. But you're still having to deal with bad defense for half the game in that scenario. Given the size of the park, it's effect on power numbers in general and the massive difference in defense between Soler and Heyward I just can't see how it makes any sense to start Soler. If you're that concerned about Heyward v LHP, that you want to start a RHH, you're almost better off starting Almora. Almora would be preferable to Heyward and his .586 OPS against LHP this year, because since you're already starting Montero against a LHP for defense and you can't punt the entire bottom 3rd of the order for defensive purposes. I'd still rather Soler hit because I don't trust Almora at the plate at all, and knowing what you want to do with Soler going in means you can maximize the upside while minimzing the downside. The last game was a perfect example, he got 4 plate appearances and had one fly ball hit his way. Against leftypalooza you can probably similarly hide him in LF with similar outcomes. I'm not 100% sure if I'd put him as high in the lineup because that puts you in a tricky late innings spot where Rizzo could be pitched around to get to Heyward/Almora, but we're splitting hairs at that point.