Here is the single season leaderboard for total fantasy points (PPR) in games 13-15 (edited to add: which has been weeks 14-16 in recent decades, but the NFL did bye weeks differently for part of this time period):
123.1 Todd Gurley 2017
115.0 LaDainian Tomlinson 2003
114.7 Jamaal Charles 2013
112.2 Marshall Faulk 2001
108.0 Odell Beckham 2014
106.8 Marshall Faulk 2000
104.4 Larry Johnson 2005
104.3 Marshall Faulk 1999
103.8 Steven Jackson 2006
99.2 Warrick Dunn 2000
98.9 Drew Bennett 2004
98.6 Le'Veon Bell 2016
96.8 Priest Holmes 2003
95.8 Maurice Jones-Drew 2006
94.8 Patrick Jeffers 1999
94.5 Jeff Garcia 2003
94.4 Eric Dickerson 1984
93.5 Kevan Barlow 2003
93.0 Terrell Owens 2000
91.3 Tiki Barber 2005
90.6 Le'Veon Bell 2014
90.1 Corey Dillon 1997