In a matchup that promises to be a highly anticipated showdown, the San Francisco 49ers and the Kansas City Chiefs are set to face off in Super Bowl 2023. As bettors eagerly await the big game, the teams' different betting trends are becoming increasingly evident.

The 49ers have been favored in every single game they've played this season, an unprecedented feat. Opening the season with an unbeaten streak, San Francisco showed their dominance by going 4-1 against the spread. However, as the season progressed, the 49ers experienced a cooling off period, winning only three of their next six games. In fact, they lost three games by just one score, reflecting their struggles as favorites, particularly in the postseason. So far, the 49ers haven't covered the spread in either of their two playoff games, narrowly escaping victories against the Packers and the Lions.

With an overall record against the spread (ATS) of 9-8, the 49ers have finished the regular season with a slightly below-average performance. Their record as favorites stands at 9-10, indicative of their inability to meet expectations in a number of games. Surprisingly, the 49ers have yet to play as underdogs this season.

On the other hand, the Chiefs have been a strong force against the spread, making them the fourth-best team in the NFL in that category. After a rocky start in December where they failed to cover in three consecutive games, the Chiefs turned things around and are now on a five-game streak of covering the spread. This remarkable ATS success can be attributed to their recent postseason performances, which saw them cover as favorites against the Dolphins and win outright as underdogs against the Bills and the Ravens.

In terms of over/under record, the Chiefs have shown a trend of hits on the under. With a record of 6 overs and 14 unders, they are among the teams with the fewest overs this season. This highlights the Chiefs' relative offensive struggles, as well as their strong defensive prowess. Notably, the Chiefs are the only team in the league to have not allowed an opponent to score 30 points this season, showcasing their defensive dominance.

As the Super Bowl approaches, bettors will be closely monitoring the line movement to see if there are significant shifts in favor of the Chiefs. With the 49ers' struggles as favorites and the Chiefs' recent success against the spread, the betting landscape is shaping up to be an intriguing element of this highly anticipated matchup.

The clash between the 49ers and the Chiefs is set to captivate audiences on the field and in sportsbooks alike. As we countdown to Super Bowl 2023, fans and bettors alike are eagerly awaiting the outcomes brought about by these contrasting betting trends.