Mike Tyson wasn’t quite a Broadway knockout in week 10 (July 30-Aug. 5), but the New York bow of the boxer’s solo show nonetheless posted healthy numbers. That was one of the factors keeping the Main Stem’s overall cume on solid ground — despite sales slippage at almost every other individual production on the boards.“Mike Tyson: Undisputed Truth” pulled in $624,496 from six perfs, a relatively strong showing for a small-scale nonmusical, with crowds drawn by the high profile of the director, Spike Lee, as well as its star. The show, which initially bowed in Vegas, will play five more perfs at the Longacre. Also adding coin to the Rialto pot was a spike at “Fela!” ($568,727), which rose a whopping 63% in the final week of its limited summertime run. That show wasn’t the only one to benefit from last-minute sales: Jim Parsons starrer “Harvey” ($707,136) pulled in some additional cash by playing an extra, ninth perf in its final frame on the boards, while “Memphis” ($657,688) also picked up in its final sesh. All told, Broadway sales came in at $23.5 million for the 28 shows on the boards, slightly ahead of the prior week’s tally. The Rialto cume will likely take a hit, however, with the exits of “Harvey,” “Memphis” and “Fela!” poised to tamp down the numbers, along with the absence of Ricky Martin, skedded to be out of “Evita” for the entire frame. The 19 musicals grossed $18,896,861 for 80.3% of the Broadway total, with attendance of 182,102 and an average paid admission of $103.77. The nine plays grossed $4,650,124 for 19.7% of the Broadway total, with attendance of 56,381 and an average paid admission of $82.48.