Here are some aggregate break statistics from several of the matches of the 2015 World Chinese 8-Ball Masters event, played this week in Qinhuangdao, China with free streaming.
This was a 24-player invitational event, with 12 players from China and 12 from elsewhere. Stage 1 was round-robin play in 4 groups of 6 (3 from China, 3 from elsewhere). The top 2 from each group formed an 8-player modified-single-elimination bracket competing for the event title and positions 2 through 8. The 3rd- and 4th-place players from each group formed a similar second 8-player bracket, competing for positions 9 through 16 (different prize money for each spot).
The conditions for this call-shot event included: 9-foot table with fairly tight pockets and rounded pocket jaws, Andy green cloth, Super Aramith Pro balls, measles cue ball, jump cues allowed, referee racks using a template, alternate breaks, foul on all balls, table open after the break, ball in hand behind the line after a foul on the break, making an 8-ball on the break does not count as a win, races to 13 subject to a 130-minute match clock, 45-second time clock (one extension allowed per game) with losing player at halftime having the option to reduce it to 30 seconds, and an illegal break unless at least 3 balls are pocketed or reach the head string.
These stats are for 4 full matches and the tail end of 3 other matches, as follows:
Overall results -- The breaker made at least one ball and did not foul 70% of the time (72 of 103), won 66% of the games (68 of 103), and broke and ran 49% of the games (50 of 103).
Here's a more detailed breakdown of the 103 games.
Break-and-run games: The 50 break-and-run games represented 49% of all 103 games, 74% of the 68 games won by the breaker, and 69% of the 72 games in which the break was successful (made a ball and didn't foul).
With alternating breaks, B&R "packages" of the normal type are not possible. But we can still look at the breaks of a given player and see how many he ran on his own successive breaks, and we can call these "alternate-break packages." The 50 break-and-run games consisted of 2 alternate-break 7-packs (by Melling and Yang Fan), 1 alternate-break 5-pack (by Zheng), 4 alternate-break 3-packs, 4 alternate-break 2-packs, and 11 singles. Yang Fan's 7-pack was preceded by a 3-pack at the end of his previous match, so he essentially had an alternate-break 10-pack.
8-balls on the break: The 8-ball was made on the break twice (1.9% of all 103 breaks), but did not count as a win.
This was a 24-player invitational event, with 12 players from China and 12 from elsewhere. Stage 1 was round-robin play in 4 groups of 6 (3 from China, 3 from elsewhere). The top 2 from each group formed an 8-player modified-single-elimination bracket competing for the event title and positions 2 through 8. The 3rd- and 4th-place players from each group formed a similar second 8-player bracket, competing for positions 9 through 16 (different prize money for each spot).
The conditions for this call-shot event included: 9-foot table with fairly tight pockets and rounded pocket jaws, Andy green cloth, Super Aramith Pro balls, measles cue ball, jump cues allowed, referee racks using a template, alternate breaks, foul on all balls, table open after the break, ball in hand behind the line after a foul on the break, making an 8-ball on the break does not count as a win, races to 13 subject to a 130-minute match clock, 45-second time clock (one extension allowed per game) with losing player at halftime having the option to reduce it to 30 seconds, and an illegal break unless at least 3 balls are pocketed or reach the head string.
These stats are for 4 full matches and the tail end of 3 other matches, as follows:
Mon., Jan. 5 (in China)
Gareth Potts def. Wang Yun 13-12 (stats collected for last 3 games only)
Tues., Jan. 6
Earl Strickland d. Stephen Hendry 13-10 (last 9 games only)
Wed., Jan. 7
Chen Qiang d. Daryl Peach 13-10 (last 7 games only)
Chris Melling d. Yang Fan 13-6
Thurs., Jan. 8
Yang Fan d. Gareth Potts 13-7
Gareth Potts d. Wang Peng 13-10 (3rd and 4th places)
Yang Fan d. Zheng Yubo 13-9 (finals)
Overall results -- The breaker made at least one ball and did not foul 70% of the time (72 of 103), won 66% of the games (68 of 103), and broke and ran 49% of the games (50 of 103).
Here's a more detailed breakdown of the 103 games.
Breaker made at least one ball and did not foul:
Breaker won the game: 54 (52% of the 103 games)
Breaker lost the game: 18 (17%)
Breaker fouled on the break:
Breaker won the game: 3 (3%)
Breaker lost the game: 3 (3%)
Breaker broke dry (without fouling):
Breaker won the game: 11 (11%)
Breaker lost the game: 14 (14%)
Therefore, whereas the breaker won 66% (68) of all 103 games,
He won 75% (54 of 72) of the games in which he made at least one ball on the break and did not foul.
He won 50% (3 of 6) of the games in which he fouled on the break.
He won 44% (11 of 25) of the games in which he broke dry but did not foul.
He won 45% (14 of 31) of the games in which he either fouled on the break or broke dry without fouling.
Break-and-run games: The 50 break-and-run games represented 49% of all 103 games, 74% of the 68 games won by the breaker, and 69% of the 72 games in which the break was successful (made a ball and didn't foul).
With alternating breaks, B&R "packages" of the normal type are not possible. But we can still look at the breaks of a given player and see how many he ran on his own successive breaks, and we can call these "alternate-break packages." The 50 break-and-run games consisted of 2 alternate-break 7-packs (by Melling and Yang Fan), 1 alternate-break 5-pack (by Zheng), 4 alternate-break 3-packs, 4 alternate-break 2-packs, and 11 singles. Yang Fan's 7-pack was preceded by a 3-pack at the end of his previous match, so he essentially had an alternate-break 10-pack.
8-balls on the break: The 8-ball was made on the break twice (1.9% of all 103 breaks), but did not count as a win.
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