In 2005, Robinson compiled the best numbers of his college career. He was named Big Ten Conference Offensive Player of the Year by the league’s coaches and was a consensus second-team All-Big Ten choice. He was named to the Maxwell Award watch list and was a semi-finalist for the Davey O'Brien Award, given to the nation’s top passer. He completed 162 of 311 passes (52.1%) for 2,350 yards, seventeen touchdowns and ten interceptions. His 2,350 passing yards at the time ranked fifth on the school season-record list, topped only by Zack Mills (2,417 in 2002), Tony Sacca (2,488 in 1991), Anthony Morelli (2,651 in 2007) and Kerry Collins (2,679 in 1994). He was second on the team with 163 carries for 806 yards (4.9 avg) and eleven touchdowns, becoming the first player in school history to throw for over 2,000 yards and rush for over 500 yards in the same season. His 806 rushing yards set a school season-record for quarterbacks and he became the first quarterback in Penn State history to run for at least ten touchdowns in a season. His 28 touchdowns (17 passing, 11 rushing) was one shy of the school season-record of 29 (26 rushing, 3 catching) by Lydell Mitchell in 1971. Robinson also became the first Nittany Lion to throw three touchdown passes in three separate games during the same season since Todd Blackledge in 1982.