When naming the NFL's best middle linebackers over the past decade, two stand out: Ray Lewis and Brian Urlacher.
Both were fiery and passionate, the vocal quarterbacks of their respective defenses. Neither was ever at a shortage of words, on or off the field.
Buffalo Bills middle linebacker Kiko Alonso is different.
One of the most quiet and reserved players in his team's locker room, the 46th overall pick in April's draft has let his play speak for itself. Staying on the field for every snap this season, Alonso is the NFL's second-leading tackler and is among the favorites to win the defensive rookie of the year award.