The Bay Stars have not scored a run since the 7th inning of their game against the Hanshin Tigers on April 1. That's a span of twenty-nine innings without a run.
The Yomiuri Giants have not scored a run since the 5th inning of their game against the Hiroshima Carp on April 4. That's a span of twenty-two innings.
The Chunichi Dragons and the Hiroshima Carp have been on the other side of all those scoreless innings: the Dragons' pitching staff has not allowed a run since the 8th inning for their game against the Hiroshima Carp on April 1, a span of twenty nine innings. And Hiroshima's staff has not allowed a run since the 5th inning of their game against the Yomiuri Giants on April 4, a span of twenty-two innings.
Other points of interest:
The Bay Stars and Giants have scored the fewest runs in the Central League with thirteen and eight respectively. When including the Pacific League, only the Seibu Lions have scored fewer runs with seven.
The Dragons (0.66) and Carp (2.18) have the two best team ERAs in both the Central League and Pacific League.