MESA, Ariz. -- Foreboding clouds and sprinkles after a morning of heavy rain have Cubs officials bracing for the possibility of a rainout of Sunday's game against the White Sox at HoHoKam Park.

One of the largest crowds of the spring was expected.

The forecast for Las Vegas, where the Cubs are scheduled for a split-squad game against Texas also is iffy - putting the Cubs' pitching plans in jeopardy for the next few days if these games can't get played.

Casey Coleman and Andy Sonnanstine are scheduled to pitch in Mesa, while Chris Volstad is scheduled to start in Vegas.

If they play, here's the Cubs' lineup for the Sox game:

DH DeJesus
CF Byrd
SS Castro
1B Rizzo
C Soto
LF Baker
3B Vitters
2B Amezaga
RF Campana