Lyons is an option to start one half of Tuesday's doubleheader against the Cubs, MLB.com's Jenifer Langosch reports. It seems that Tim Cooney is the favorite to get that start, but it is not a guarantee at this point. Whoever gets named the starter will likely be brought up as the 26th man for the doubleheader and then be sent back to Triple-A that night. Lyons has a 5.09 ERA in five starts this season for the Cardinals.