Blount’s latest transformation has been from special teamer and change-of-pace back to game breaker: He followed up his 189-yard, two-touchdown performance in Week 17 with a 166-yard, four-touchdown day against the Colts on Saturday. Blount is a perfect symbol not only of the Patriots’ approach — a sterling example of the kind of afterthought Bill Belichick acquired on the cheap that nevertheless suddenly plays a prime role in playoff crunch time — but of New England’s willingness to evolve. Previously built around the Randy Moss/Wes Welker spread-to-pass attack of the late 2000s and later the multiple–tight end offense of Rob Gronkowski and Aaron Hernandez, this is now a physical, power running team that mixes in play-action.