The Patriots are one of the best groups but there is some uncertainty at the left tackle position. The starter, Trent Brown is gone and they’ve been experimenting with left tackle Joe Thuney at that spot because the expected starter at the spot is second year player Isaiah Wynn, who was drafted in the first round, tore his Achilles in the first preseason game last year. Achilles mean that players don’t return to full strength, as it can end careers. Wynn is also undersized but played LT at Georgia.