I had a few rules when doing this list. First is that a player had to have played at least two seasons in this decade (ex. Kyle Rudolph is not eligible based on the fact that he only played one season this decade) and that any player using the redshirt rule as a freshman in 2018 is also ineligible. I only considered playing time for the Irish (Alohi Gilman transferred in and is being counted as 2017-2019). I went with OL, DL, LB, and DB to give more options rather than restricting to specific linemen positions as an example.
Post has been updated due to Alohi Gilman declaring for the draft.
QB: Ian Book (2016-Present)
RB: Josh Adams (2015-2017)
RB: Dexter Williams (2015-2018)
WR: Michael Floyd (2008-2011)
WR: Will Fuller (2013-2015)
WR: Chase Claypool (2016-2019)
TE: Tyler Eifert (2009-2012)
OL: Ronnie Stanley (2012-2015)
OL: Quenton Nelson (2014-2017)
C: Nick Martin (2011-2015)
OL: Zack Martin (2009-2013)
OL: Mike McGlinchey (2013-2017)
DL: Stephon Tuitt (2011-2013)
DL: Julian Okwara (2016-2019)
DL: Sheldon Day (2012-2015)
DL: Khalid Kareem (2016-2019)
LB: Manti Te'o (2009-2012)
LB: Jaylon Smith (2013-2015)
LB: Te'von Coney (2015-2018)
LB: Drue Tranquill (2014-2018)
DB: Julian Love (2016-2018)
DB: Harrison Smith (2007-2011)
DB: Jalen Elliot (2016-2019)
DB: Alohi Gilman (2017-2019)
K: Justin Yoon (2015-2018)
P: Tyler Newsome (2014-2018)
RS: CJ Sanders (2015-2017)
AP: Theo Riddick (2009-2012)
Post has been updated due to Alohi Gilman declaring for the draft.
QB: Ian Book (2016-Present)
RB: Josh Adams (2015-2017)
RB: Dexter Williams (2015-2018)
WR: Michael Floyd (2008-2011)
WR: Will Fuller (2013-2015)
WR: Chase Claypool (2016-2019)
TE: Tyler Eifert (2009-2012)
OL: Ronnie Stanley (2012-2015)
OL: Quenton Nelson (2014-2017)
C: Nick Martin (2011-2015)
OL: Zack Martin (2009-2013)
OL: Mike McGlinchey (2013-2017)
DL: Stephon Tuitt (2011-2013)
DL: Julian Okwara (2016-2019)
DL: Sheldon Day (2012-2015)
DL: Khalid Kareem (2016-2019)
LB: Manti Te'o (2009-2012)
LB: Jaylon Smith (2013-2015)
LB: Te'von Coney (2015-2018)
LB: Drue Tranquill (2014-2018)
DB: Julian Love (2016-2018)
DB: Harrison Smith (2007-2011)
DB: Jalen Elliot (2016-2019)
DB: Alohi Gilman (2017-2019)
K: Justin Yoon (2015-2018)
P: Tyler Newsome (2014-2018)
RS: CJ Sanders (2015-2017)
AP: Theo Riddick (2009-2012)
Last edited: