EXCLUSIVE: In a competitive situation, CBS has nabbed a single-camera comedy written by Tad Quill and starring David Walton. The project, from Sony Pictures TV and studio-based Happy Madison, centers on a bachelor firefighter (Walton) who has to make the ultimate sacrifice of taking care of someone other than himself when a 9-year-old girl enters his life. Quill is executive producing with Happy Maddison’s Doug Robinson, with Walton serving as producer.

The untitled comedy reunites Quill, creator/executive producer of last season’s single-camera midseason NBC comedy Bent, and the series’ male lead David Walton. The duo’s new project was pitched to all four major networks, ABC, NBC, Fox and CBS. All expressed interest, with CBS brass said to have been particularly passionate. Despite the lack of single-camera comedies on CBS’ air, the network’s programming chief Nina Tassler has been vocal about the network’s commitment to the form and, in its first major comedy move for next season, CBS recently gave an off-cycle pilot order to a Rob Greenberg-penned single-camera comedy to star Chris Smith, Kal Penn and Tony Shalhoub.

The Tad Quill/David Walton project extends CBS’ relationship with Sony TV and Happy Madison, which produce the network’s long-running sitcom Rules Of Engagement. ICM Partners-repped Quill and Gersh-repped Walton first worked together on the 2010 NBC comedy Perfect Couples, on which Walton played one of the leads and Quill served as co-executive producer.

The Quill/Walton show is one several hot single-camera comedy pitches to spark a heated bidding this week, along with the Michael J. Fox-starring family comedy produced by Will Gluck, which appears headed to NBC with a big commitment, and a cop comedy from Parks & Recreation‘s Michael Schur and Dan Goor, which is still very much in play.