Please note that Taz has gone by a variety of names in his career. His original name in ECW was the Tazmainac and it was eventually shortened to Taz. In the WWE he added a z to his name but that was taken away when he entered TNA.
In addition to wrestling, from 2002 - 2009, he was a commentator for the WWE. In 2009, he joined TNA where originally served as the mentor of Samoa Joe before returning to the commentary table exclusively.
1993
12/4 - Kevin Sullivan & the Tazmaniac defeated ECW Tag Team Champions Tommy Dreamer & Shane Douglas (sub. for Johnny Gunn)
1994
2/4 - the ECW Tag Team Titles were held up following a falls count anywhere match against the Harris Brothers that ended in a no contest
3/5 - Kevin Sullivan & the Tazmaniac defeated Ron & Don Harris via DQ, as a result they won the vacant ECW Tag Team Titles
3/6 - w/Kevin Sullivan lost the tag team titles to The Public Enemy
3/6 - The Tazmaniac won the ECW TV Championship from Sabu
3/6 - The Tazmaniac lost the ECW TV Championship to JT Smith
1995
2/4 - Sabu & the Tazmaniac won the ECW Tag Team Championship from the Public Enemy in a double tables match
2/25 - w/Sabu lost the tag team titles to Chris Benoit & Dean Malenko
1996
4/13 Barely Legal - beat Sabu
6/7 - won the ECW Television Championship from Shane Douglas
8/17 Hardcore Heaven - beat Chris Candido
11/30 November to Remember - beat Pitbull #2
1998
3/1 Living Dangerously - lost the TV Title to Bam Bam Bigelow
5/15 - Tazz declares himself the first FTW Champion
8/2 Heatwave - beat Bam Bam Bigelow
11/1 November to Remember - Taz, Sabu & Rob Van Dam beat Shane Douglas, Bam Bam Bigelow, & Chris Candido
12/19 - lost the FTW Title to Sabu
1999
1/10 Guilty as Charged - won the ECW Championship from Shane Douglas
3/21 Living Dangerously - ECW Champion Taz beat FTW Champion Sabu and unified the titles
5/16 Hardcore Heaven - beat Chris Candido
5/16 Hardcore Heaven - beat Bubba Ray Dudley
7/18 Heatwave - beat Yoshihiro Tajiri
9/19 Anarchy Rules - 3 Way Dance for ECW Title: Mike Awesome beat Champ Taz and Masato Tanaka to win the title
11/7 November to Remember - lost to ECW TV Champion Rob Van Dam
2000
1/23 Royal Rumble - beat Kurt Angle
2/27 No Way Out - beat The Big Bosmman by DQ
4/11 SmackDown - won the hardcore championship from Perry Saturn and immediately lost it to Crash Holly
4/13 - WWE wrestler Tazz won the ECW Championship from WCW wrestler Mike Awesome
4/22 - lost the ECW Championship to Tommy Dreamer
4/30 Backlash - Hardcore Champion Crash Holly beat Bob Holly, The Hardy Boyz, Perry Saturn & Tazz
7/23 Fully Loaded - beat Al Snow
8/27 SummerSlam - lost to Jerry Lawler
9/24 Unforgiven - beat Jerry Lawler
10/22 No Mercy - Table Elimination Challenge: The Dudley Boyz beat D-Lo Brown & Chaz, Too Cool, Raven & Tazz, and Goodfather & Bull Buchanan
2001
4/1 WrestleMania X-7 - The APA & Tazz beat The Right to Censor
7/22 Invasion - lost to Tajiri
2002
1/7 RAW - Tazz and Spike Dudley won the World Tag Team Championship from the Dudley Boyz
1/20 Royal Rumble - Tazz & Spike Dudley beat The Dudley Boyz
2/17 No Way Out - Tazz & Spike Dudley beat Booker T & Test
2/21 SmackDown - Tazz and Spike Dudley lost the tag team titles to Chuck and Billy
2006
6/11 ECW One Night Stand - beat Jerry Lawler
Sources used include: Pro Wrestling Illustrated Almanac, onlineworldofwrestling.com, thehistoryofwwe.com, and wwe.com


