Marc Stein of ESPN reports:

dirk nowitzki

Dirk Nowitzki’s weeklong run of championship celebrations was capped by a surprise birthday party thrown for him Sunday night by girlfriend Jessica Olsson and lifelong coach/adviser Holger Geschwindner at the Dallas wine club Graileys.

The private event to commemorate Nowitzki’s 33rd birthday — dubbed “Dinner For 41” — featured exactly 41 guests, including Mavericks teammate Brian Cardinal, Mavs president of basketball operations Donnie Nelson and various team staffers and close friends. Also in attendance were former Stanley Cup-winning Dallas Star Mike Modano and three award-winning scientists who are also Mavs fans.

As part of the evening’s program, Nowitzki was presented with a Larry O’Brien championship trophy cake and treated to performances from a Dallas Symphony Orchestra string quartet (Christopher Adkins, Diane Kitzman, Gary Levinson and Ellen Rose) as well as Dallas-based comedian Paul Varghese.