| 1 | Attendance — 20,276 Fans First Union Center (Now Wells Fargo Center) — Philadelphia WrestleMania 15 drew 20,276 fans at the First Union Center in Philadelphia — the same building that would later host WM40 in 2024 (then renamed Wells Fargo Center) making WM15's Philadelphia setting historically significant. | Philadelphia, Pennsylvania | Live Attendance | First Union Center (now Wells Fargo Center) | 20,276 |
| 2 | First Hell in a Cell Match in WrestleMania History Undertaker vs. Big Boss Man — The Brood Hanged Bossman WrestleMania 15 featured the first Hell in a Cell match in WrestleMania history — The Undertaker vs. Big Boss Man. Post-match, The Brood hanged Boss Man above the ring in the most shocking visual of WM15. | — | First Hell in a Cell match in WM history | — | — |
| 3 | First Austin vs. Rock WM Match — Beginning of Their WM Trilogy WM15, WM17, and Special WM19/WM-Era Appearances WrestleMania 15 featured the first-ever WrestleMania match between Stone Cold Steve Austin and The Rock — beginning what is considered the greatest rivalry in WM history (also WM17, with Austin winning both WM15 and WM17). | — | First Austin vs. Rock WM match | — | — |
| 4 | Austin First Man to Win Consecutive WM Main Events WM14 over HBK — WM15 over The Rock — Back-to-Back Steve Austin's WM15 victory made him the first man in WrestleMania history to win consecutive WM main events — defeating Shawn Michaels at WM14 and The Rock at WM15 in back-to-back years. | — | First man to win consecutive WM main events | — | — |
| 5 | Owen Hart's Final WrestleMania — WM15 Tag Title Retention Owen Died May 23, 1999 at Over the Edge — WM15 Was His Last Owen Hart's WM15 appearance with Jeff Jarrett defending the WWF Tag Team Championship was his final WrestleMania — Owen died tragically on May 23, 1999 at Over the Edge when a harness malfunction caused him to fall from the rafters. WM15 marked his last WM appearance. | — | Owen Hart's final WrestleMania | — | — |
| 6 | Gorilla Monsoon's Final WW/WWE Appearance — Brawl for All Judging The Gorilla Passed Away October 6, 1999 Gorilla Monsoon appeared as one of the judges for the Brawl for All match (Butterbean vs. Bart Gunn) at WM15 — his final ever WWF/WWE appearance. Gorilla Monsoon passed away on October 6, 1999. | — | Gorilla Monsoon's final WWF/WWE appearance | — | — |
| 7 | Butterbean KO'd Bart Gunn in 27 Seconds Most Lopsided Result in WM History Butterbean (Eric Esch) knocked out Bart Gunn in approximately 27 seconds at WM15 — arguably the most lopsided WM result in history and widely considered one of the most embarrassing moments in WWF booking history (Gunn was supposed to be built up by winning Brawl for All). | — | Fastest KO in WM history — Butterbean def. Bart Gunn (27 ... | — | — |
| 8 | Boyz II Men Sang America the Beautiful Philadelphia's Own Boyz II Men Opened WM15 Philadelphia's own Boyz II Men performed America the Beautiful to open WrestleMania 15 — a homecoming performance for one of R&B music's most celebrated groups from the City of Brotherly Love. | — | Opening Musical Performance | — | — |
| 9 | Jim Ross Returned for Main Event Commentary JR Returned After Bell's Palsy Absence Jim Ross returned to the WWF announce position at WM15 after a several-month absence due to Bell's Palsy — specifically coming back to call the Stone Cold Steve Austin vs. The Rock main event. | — | Jim Ross returned for main event commentary | — | — |
| 10 | Six Championships Defended at WM15 Most Title Matches at a Single WM to That Point WrestleMania 15 defended six of the seven active WWF championships — WWF, IC, Tag, European, Women's, and Hardcore (first WM defense) — the most active championship defenses at any WM to that point. | — | Six championships defended at WM15 | — | — |