They were posted earlier in this thread. It's been a consistent trend over the last few years.
Here's the real numbers from this season
Smalling = 33 goals conceded in 22 league starts.
1.5 goals conceded per game overall.
Started against Spurs x1, City x1, Liverpool x2, Chelsea x1 and Arsenal x2. Thats 7/8 of our big matches in the league,
missing just the 1 Spurs match.
12 goals were conceded in those 7 big matches in the league.
1.7 goals conceded per big game with (7/8) played this season.
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Lindelof = 36 goals conceded in 26 league starts.
1.38 goals conceded per game overall.
Started against Chelsea x1, City x1 Liverpool x2, Spurs x1, Arsenal x1. Thats 6/8 of our big matches in the league
10 goals were conceded in those 6 big matches in the league.
1.6 goals conceded per big game with (6/8) of the big matches played this season.
Edit - Fixed his numbers because he didnt start the first Spurs match, he was a sub
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Jones = 20 goals conceded in 13 league starts.
1.5 goals conceded per game overall
Started against Spurs x2. Thats 2/8 of our big matches in the league.
3 goals were conceded in those 2 big matches in the league.
1.5 goals conceded per big game with 2/8 big matches played this season.
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Bailly = 14 goals conceded in 7 league starts.
2 goals conceded per game overall.
Started against Arsenal x1, Liverpool x1. Thats 2/8 of our big matches in the league.
5 goals were conceded in those 2 big matches in the league.
2.5 goals conceded per big game with 2/8 big matches played this season.
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Rojo = 2 goals conceded in 1 league start.
2 goals conceded per game overall.
Started against Arsenal x1. Thats 1/8 of our big matches in the league.
2 goals were conceded in that 1 big match in the league.
2 goals conceded per big game with 1/8 big games played this season.
Edit -
The least goals have been conceded with Lindelof starting in the league.
But he has played less big matches than Smalling.
Jones again concedes the same amount as Smalling in general, but has a better record in the big matches than either Smalling or Lindelof.
But he's only played 2 of the big matches whereas Lindelof has played 6 and Smalling has played 7. So its too small a sample size.
Bailly and Rojo have been very poor.