not enough
he scored 00000000000000000000000000000000000000000000000000000
4
Don Bradman's first duck occurred in his twenty-first innings - though his following two Test innings saw him score 226 and 112 runs. Bradman scored a total of seven ducks in Test cricket, including the legendary final innings in which he was dismissed for a duck.
18 runs of 40 balls.
7 innings
Australian batsman Don Bradman captained Australia on 24 occasions in Test matches, scoring a second-ball duck in his second innings as captain.
5.98 innings per start, or about 6 innings, according to baseball-reference.com
Runs 6996 Average 99.94
He scored '0' in his last test match.
Zero
The average baseball game last about 2½ to 3 hours. Most games are regular 9 inning games. It's not rare, but is still seldom to find a game that ends before the 9th inning. It is somewhat common, however, to see a game last longer than 9 innings.