He was selected as the Big Play Player of the Year for kicking a game-winning 49 yard field goal to give Lake Orion a playoff victory and regional title over Sterling Heights Stevenson.

As a senior, he started as a defensive back, wide out, kicker and punter, voted team captain and received All-North conference honors.

[1] Heath accepted a football scholarship from Saginaw Valley State University, an NCAA Division II program and a member of the Great Lakes Intercollegiate Athletic Conference.

[3] At the conclusion of the pre-draft process, Heath was projected to be a seventh round pick or priority undrafted free agent by NFL draft experts.

[6] Throughout training camp, Heath competed for a roster spot as a backup safety and special teams player against Brandon Underwood, Matt Johnson, Micah Pellerin, Jakar Hamilton, and Eric Frampton.

[8] Heath made the active roster as the fifth safety on the Cowboys' depth chart and special teams player after Johnson was placed on injured reserve due to a foot injury.

[9] Head coach Jason Garrett named Heath a backup free safety to start the regular season, behind Barry Church and Danny McCray.

[10][11] He made his professional regular season debut in the Cowboys' season-opener against the New York Giants and assisted on one tackle during their 36–31 victory.

On October 27, 2013, Heath earned his first career start after J. J. Wilcox was inactive and missed three games (8-10) due to a knee injury.

[12] Heath finished the Cowboys' 31–30 loss at the Detroit Lions with a season-high nine combined tackles and a forced fumble, but was also part of a highlight reel reception, when he lost a jump ball to Calvin Johnson.

Heath recovered a fumble by wide receiver Victor Cruz and returned it for a 50-yard touchdown after it was stripped by teammate Orlando Scandrick during the second quarter.

[14] On December 22, 2013, he recorded five combined tackles, deflected a pass, and made his first career interception during a 24–23 victory at the Washington Redskins in Week 16.

Heath made his first career interception off a pass by Redskins' quarterback Kirk Cousins, that was originally intended for wide receiver Santana Moss, in the second quarter.

[18] Heath competed against J.J. Wilcox, Matt Johnson, and Jakar Hamilton for the job as the starting free safety during training camp.

The following week, he recorded seven solo tackles and deflected a pass attempt during a two-point conversion after replacing Barry Church in the second half of the Cowboys' 26–21 loss at the Green Bay Packers in the NFC Divisional Round.

[24] Heath received a 15-yard penalty for unnecessary roughness and Lockette was diagnosed with a severe concussion and underwent surgery to stabilize ligaments in his neck.

On November 15, 2015, Heath recorded two solo tackles, two pass deflections, and two interceptions in the Cowboys' 10–6 loss at the Tampa Bay Buccaneers in Week 10.

Heath made his first interception of his career off a pass by quarterback Jameis Winston, that was originally intended for tight end Brandon Myers, in the second quarter.

This made him the first non-kicker or punter to make multiple extra points in game since Houston Oilers linebacker Ted Thompson went 4 out of 4 in 1980.

[38] On November 30, 2017, Heath recorded four solo tackles, broke up a pass, and made an interception in a 38–14 win against the Redskins in Week 13.

On March 27, 2020, Heath signed a two-year, $8 million contract with the Las Vegas Raiders, reuniting with assistant coach Rod Marinelli, who was his defensive coordinator with the Cowboys.