Tom Brady threw four first-half touchdown passes and the Tampa Bay Buccaneers clinched a playoff berth by pounding the host Detroit Lions 47-7 on Saturday.The Bucs (10-5) qualified for the postseason for the first time since 2007. Brady completed 22 of 27 passes for 348 yards despite sitting out the entire second half. Backup Blaine Gabbert threw two touchdown passes.Mike Evans caught 10 passes for 181 yards and two touchdowns and Chris Godwin had five receptions for 84 yards and a score. Tight end Rob Gronkowski scored on both of his receptions.James Agnew scored on a punt return for the Lions (5-10). Detroit’s starting quarterback, Matthew Stafford, injured his ankle in the first quarter and did not return. The Lions have lost seven of their last nine games.Tampa Bay raced to a 34-0 halftime lead, scoring touchdowns on five of its first six possessions.Brady connected with Gronkowski, who beat one-on-one coverage, from 33 yards out for the first score. The extra point was missed.The Bucs needed only four plays to drive 80 yards on their next possession. Brady’s 47-yard hookup with Godwin set up his 27-yard scoring strike to Evans.Leonard Fournette ran 4 yards up the middle for Tampa Bay’s third touchdown.