Meanings of real clunker in English

Some of the sport events are better than others, though there's only one real clunker (disk golf).

Meanwhile, the Rams delivered a real clunker in which nothing good happened, aside from wide receiver Brian Quick's career-high seven catches for 99 yards.

Unlike a few years ago, when machines like the Atari Jaguar or Panasonic 3DO were available, there is no real clunker on that list.