The Cardinals chose to stick with Masterson as Saturday's starter and will push Lance Lynn's next start back in order to slot Lackey in on Sunday. Lackey hasn't pitched since last Saturday, and that layoff is one reason why the Cardinals didn't want to further delay his return to the mound. Like Lackey, Masterson will also be pitching on seven days' rest.
Lynn's recent workload and the schedule of opponents also played into the decision to align the rotation as such. Had Lackey not pitched against Milwaukee, he would have been taking the mound against the Red Sox next week.
"We've worked Lance pretty good," manager Mike Matheny said. "You look at his pitch count over his last several starts, I don't think [the extra rest] is going to hurt him. You also take into consideration, too, [Lackey] pitching against his former team. Not that that's a hindrance as much as the other two factors. We have an opportunity to get him in there as quick as we can, get him acclimated to this stadium, this staff and this fan base. I think it's a good decision."