If the weekend box office estimates hold then Melissa McCarthy's new movie The Boss dethroned Batman v Superman: Dawn of Justice to become the No. 1 movie in North America.

The Boss held a very narrow lead over BvS -- roughly $46,000 -- with an estimated $23.5 million to the DC superhero showdown's $23.4 million.

BvS could possibly rebound to resume its reigning champ status once the final numbers come in Monday.

McCarthy's latest -- another collaboration co-written and directed by her husband/co-star Ben Falcone -- received largely scathing reviews from critics and a dire "C+" CinemaScore from audiences. (BvS received a lukewarm "B" CinemaScore.)

This doesn't bode well for The Boss's commercial longevity in the competitive weekends ahead.

BvS dropped to second place, falling another 54% at the box office in its third weekend in release for a current domestic total of $296.7 million.

Another new release, the FPS action movie Hardcore Henry, didn't pack much firepower at the box office, debuting in fifth place with a weak $5.1 million.

Here are the weekend's top 10 North American box office estimates via Rentrak:

1. The Boss $23.5 million

2. Batman v Superman: Dawn of Justice $23.4 million

3. Zootopia $14.4 million

4. My Big Fat Greek Wedding 2 $6.4 million

5. Hardcore Henry $5.1 million

6. Miracles From Heaven $4.8 million

7. God's Not Dead 2 $4.3 million

8. The Divergent Series: Allegiant $3.6 million

9. 10 Cloverfield Lane $3 million

10. Eye in the Sky $2.8 million