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Originally Posted by krosero
 For SamprasHrbaty, 1997 Australian Open, 4th round (67 (74) 63 64 36 64), The Australian reported that Sampras led Hrbaty in total points by 157154 (the ATP has 189184);

The total points won line up exactly if aces and df's are subtracted once.
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 For SamprasIvanisevic, 1998 W final, NBC had counted 306 points as of 1all, 3015 in the fifth. I counted 27 more points, for a total of only 333 points in the match, compared to 404 reported at the ATP.

Subtracting the 71 aces and doublefaults results in NBC's 333 points.
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For SamprasIvanisevic, 1995 W SF, the AP and Irish Times report that Sampras led in total points won by 146145; the ATP has him trailing 175185.

Same agreement here.
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 For BeckerAgassi, 1995 W SF, the Washington Times had Agassi winning 21 of 53 second serves, while the ATP has 21 of 59. Also, NBC had Becker serving at only 55% as of 3all in the fourth, six percentage points lower than the ATP’s figure for the whole match.

Since most aces are first serves, it makes sense that Becker's firstserve percentage would be inflated at the ATP, since those first serves are being counted twice.
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 For SamprasBecker, 1995 W final, the ATP stats differ from the Washington Post on the number of points that Becker won in return games (31 instead of the Post's20), his aces (17 instead of 16) and his doublefaults (16 instead of 15). And the ATP’s Total Points Won (309) would yield 7.9 points per game, higher than any confirmed average I know.

I've actually found stats for Becker's return games in this final that differ from one newspaper to another; a lot of disagreements. I don't know the correct figure but it does look like the ATP's figures for Total Points Won are inflated a lot, with these two men serving so many aces (and Becker serving so many double faults). If the aces and doubles are subtracted, it would leave Sampras winning 138 points overall, Becker 108. That's a total of 246, for a more believable average of 6.3 points per game.
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 For SamprasCorretja, 1996 USO QF, the ATP has a total of 431 points played, while other sources have 375 (Washington Times, Atlanta JournalConstitution, Orange County Register).

The ATP has 375 too, once aces and df's are subtracted. And the points break down as they do in the print media: 188 for Alex and 187 for Pete.
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 For SamprasAgassi, 1993 W QF, the ATP has 318 points played, but HBO's count with eight games left has only 224. I counted 48 points remaining, for a total of only 272.

I did this match recently and my total was actually 275, with Sampras leading 146129 (as he does in the ATP stats if aces and df's are subtracted).
Incidentally I have Agassi facing 15 break points, while the ATP has only 13.