Troy Aikman, 11-5, 3 NFC Championships,
3 Super Bowl NFL Championships, but in
his 6 lowest playoff passer-rating games,
he was 1-5:
https://www.pro-football-reference.com/players/A/AikmTr00/gamelog/post/

63.0-loss to Lions in 1991 Divisional playoff
68.1-loss to 49ers in 1994 NFC Championship
67.9-win over Vikings in 1996 Wild Card playoff
37.4-loss to Panthers in 1997 Divisional playoff
37.0-loss to Cardinals in 1998 Wild Card playoff
70.7-loss to Vikings in 1999 Divisional playoff

~~~

Quincy Carter, only 1 playoff game, 0-1, passer-
rating 56.9-loss to Panthers in 2003 Wild Card
playoff game:
https://www.pro-football-reference.com/players/C/CartQu00/gamelog/post/

~~~

Tony Romo, 2-4, his 3 lowest passer-rating games,
he lost all 3, his 1st due to a bobbled snap on an
extra point attempt. Ironically, in his 2014 loss in
the Divisional playoff vs the Packers on 1/11/15,
he had a very high passer-rating, his best in the
playoffs, 143.6, & most blame that loss on idiotic ...

.... officiating (some would interpret that as idiotic
NFL rules) that overruled a Dez Bryant late game
catch at the 1 when Dez dived into the end zone,
& well, it's one of the most controversial reversals
of a call in NFL history, leading to an NFL catch
rule change.
https://groups.google.com/g/alt.sports.football.pro.dallas-cowboys/c/J-gEkFKZn0s/m/voH_-EApBAAJ

Tony's playoff fate, his 1st & last playoff losses
were simply a matter of bad fate (i.e., bad luck).
https://www.pro-football-reference.com/players/R/RomoTo00/gamelog/post/

~~~

Dak Prescott, 2-4, only his last 2 playoff losses to the
49ers were blamable on his 2 lowest lowest playoff
passer-ratings. His 1st playoff loss in a Divisional
playoff versus the Packers in his rookie 2016 season,
tying the game with a Cowboys field goal with 58 ...

.... seconds left, the Packers winning the game with a
field goal with just 35 seconds left, Dak's best passer-
rating 'til this season's playoff win over the Bucs.

Dak's 2nd playoff loss, to the Rams, in the Divisional
playoff in the 2018 season, his 2nd-best playoff pas-
ser-rating, my detailed analysis of that game is at
https://groups.google.com/g/alt.sports.football.pro.dallas-cowboys/c/ratESXRxiLw/m/_myVu2GPEgAJ

~~~

'Tis unfortunate that after the Cowboys last Super
Bowl win, Troy's playoff skills faded, Quincy was a
Jerry Jones mistake, Tony Romo was more a vic-
tim of bad luck / bad fate than QB shortcomings
with his career ended by injury, & Dak had respec-
table playoff credentials but for reasons unknown, ...

.... he's been haunted by the 49ers in the last 2 play-
off seasons. Look elsewhere for, well, since I just
posted it, here's my view on Jerry Jones, Mike Mc-
Carthy, & Dak Prescott after the Cowboys latest
nowhere-near-ready-for-prime-time playoff out-
come:
https://groups.google.com/g/alt.sports.football.pro.dallas-cowboys/c/NVSTry0xf6Y/m/lkmoFNAUEAAJ

--- --- ---