To extrapolate I used JT's stats from 2014 & the stats from the Rutgers through Notre Dame from 2015.  I also took the fact that JT ended the games not playing between a quarter and half of the Kent St, MD, Illinois, & Michigan game in 2014.

i estimate a similar mop up time with him on the bench against BGSU, Tulsa, Army, UNLV, Rutgers (2x), & MD (2x) in the upcoming 2 seasons.

I interpolated per game stats of:

17-27 231 yds 2.5 TD .75 Int passing and

16.5-91 yds 1 TD rushing.

with an amount of 3 games sitting for mop up, B10 CG's & 4 Playoff games (why not?) I get 27 games left which results in:

459-729 6237 yds 68 TD's 20 INT's passing and

446-2457 27 TD's rushing in those games.  This puts Barrett here in OSU's record books:

completions 755 #1 (498)

attempts 1190 #1 (951)

yards 10063 #1 (7547)

TD's 103 #1 (57) - he may be #1 here 4 games into next season

INT's 34 #5 (46)

rush att 732 #2 (924)

rush yds 4077 #2 (5589)

rush TD's 49 #2 (56)

total yds 14140 #1 (8600)

total TD's 152 #1 (88).

His current numbers are:

296-461 3826 yds 45 TD's 14 INT

286-1620 22 Td's