By Stephen M. Silverman
Updated October 31, 2003 01:00 PM

Who knew Justin Timberlake was such a jock?

The towheaded ‘N Sync star has been hired to write the theme song for ABC’s coverage of the National Basketball Association, reports Billboard.

In addition, he will appear in the network’s NBA promotional campaign, which is called “Can’t Get Enough,” and serve as a correspondent at NBA games and other ABC Sports events.

This isn’t the “Justified” singer’s first foray on to the athletic field. Earlier this year, he served as a special correspondent for Turner Sports, reporting from the PGA championship, NBA playoffs and NASCAR races for the TNT network, and covering college football and Major League Baseball contests for TBS.

“Justin Timberlake is a mega-star, and we are excited to have him as part of ABC Sports,” ABC Sports senior VP/executive producer Michael Pearl said in a statement.

“This provides a unique integration of sports and entertainment, and Justin’s interest and enthusiasm not only in the NBA, but in all sports, should help provide our broadcasts with a new, fresh approach,” Pearl added.

Later this month, Timberlake is also due to headline his own music special for NBC, to be called “Justin Timberlake: Down Home in Memphis,” and he is involved in McDonald’s new “I’m Lovin’ It” international ad campaign.

Meanwhile, Timberlake is readying a 29-date European tour that starts Nov. 16 in Ghent, Belgium, then breaks for the holidays after a Dec. 21 show in Dublin before picking back up Jan. 9 in London.

He’s also been spotted far and wide keeping company with Cameron Diaz.