Barth's signing was announced Tuesday, one day after rookie Kyle Brindza was released after going 2 for 7 on field-goal attempts with two missed extra points the past two games.
Barth is an eighth-year pro who's made 85.3 percent of his field-goal tries (116 of 136). He's converted all 149 of his extra-point attempts.
Barth spent five seasons with the Bucs before being released during the 2014 preseason. He spent time with Denver last year and briefly returned to Tampa Bay after an August release by the Broncos.
Defensive end T.J. Fatinikun was placed on injured reserve, tackle Martin Wallace was released from the practice squad and tackle Reid Fragel and defensive end Josh Shirley were signed to the practice squad.
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