The wet side of Karl's shirt switches from right in closeups to left in long shots.
When Simone first meets Tommy at Joyce's house, she has on a pink and blue running outfit- a pink and blue jacket with pink shorts. When Tommy hands Simone back her clothes when Joyce and his mom return, the outfit has completely changed and it is now a yellow and white shirt with yellow and white shorts.
When Rob comes home to tell Beth Ann he has tickets to the World Series on "Tuesday night" in 1963, the first night World Series game was played in 1971.
Rob tells Beth Ann he has tickets to the World Series, Dodgers vs. Yankees on Tuesday night. In 1963, the Dodgers and Yankees played only four-game in the series, with the Dodgers sweeping all four games. The first two games were in New York on Wednesday, October 2 and Thursday, October 3. The next two games, the ones played in Los Angeles, were played on Saturday, October 5 and Sunday, October 6. No World Series games were played on a Tuesday in 1963.