Wrigley Field currently has two large cavities, but the venerable park is in the midst of its annual off-season renovations designed to provide more amenities for players and fans.
The most noticeable difference in 2018 will be the relocating and widening of the dugouts, which will be moved from 15 to 30 feet down the left and right field lines and should provide more air circulation and better sight lines for the players.
Much of the excavation on the first and third base sides is designed for the Makers Mark Barrel Room and the W Club and is scheduled to open in 2019. Construction on the Catalina Club, located in the upper level behind home plate, also is targeted for 2019.
The American Airlines 1914 Club remains on schedule to be open for the Cubs' April 9 home opener against the Pirates.
Offseason work also includes expansion of concession areas, although those won't be completed until 2019, said Julian Green, the Cubs' vice president of communications.
This latest construction phase, which includes structural improvements and seat replacements, started Oct. 20, one day after the the Dodgers eliminated the Cubs in the National League Championship Series.
Image Credit: Sarah Jindra of WGN-TV