Despite the Hornets coming close on multiple occasions in the opening exchanges, it was Birmingham City who took the lead when George Hall finished from a Scott Hogan cross.
Ken Sema equalised in the second half, however Watford could not find the goal that would have given them their first away win of the season.
Here is how the Watford players rated against the Blues.
Daniel Bachmann - 7
A quiet night for the Austrian goalkeeper. He made a good save from a Troy Deeney volley in the second half and could not do much about the goal either. His distribution at points could still slightly improve, however on the whole he did not do much wrong.
Mario Gaspar- 6
The Spanish full-back had a shot blocked off the line and played a key role in Watford’s equaliser. However, he did lack pace going forward and was left exposed at times defensively. He seemed to struggle playing at wing-back in a back 5.
Craig Cathcart - 5.5
Cathcart will probably be disappointed with being caught out of position for the goal in the first half. Aside from that, he made some good interceptions and remained composed throughout. He also came close to scoring in the first half.
Francisco Sierralta - 5.5
Sierralta will be disappointed in his role for the Birmingham goal. He allowed Scott Hogan to get on the wrong side of him way too easily, which led to the assist for the goal. He did however deal with Troy Deeney well and won a number of headers.
Christian Kabasele - 5.5
Kabasele’s distribution with the ball at his feet left a lot to be desired. He was not directly at fault for the goal, however he could have followed the ball instead of following the clever movement of the Birmingham attackers. He did okay throughout the second half though.
Ken Sema - 6
Whether it was Sema’s goal or not, he played a vital role in the equaliser for the Hornets. He was a threat throughout when he had the ball, however his final ball and lack of right foot was concerning at times. It was still an encouraging display overall.
Hamza Choudhury - 6
In difficult conditions, it was a tough game for the Watford midfielders. Choudhury however was able to pick up the ball on a number of occasions and looked composed when he had it. His performance was not as strong as his debut, yet it was still solid.
Edo Kayembe - 5.5
Many of Kayembe’s passes were either sideways or backwards. While he is able to pick up the ball in deeper areas, his problem is his lack of ability in driving forward with the ball and completing ambitious passes.
Yaser Asprilla - 6
At points, Asprilla found it difficult to really get into the game and make an impact. He also struggled with physicality at times. That being said, he was able to get himself in and around the ball and at times, bring the ball forward. He also played a part in the goal. On the whole, it was a promising display from Asprilla.
Vakoun Bayo - 5
Bayo missed a great chance in the first half with a header that he could only put wide. He completed some neat passes but failed to act as a real focal point upfront. Watford looked much for threatening when Rey Manaj came on for him.
Joao Pedro - 5.5
A relatively poor performance from Joao Pedro. Having become one of the main players that Rob Edwards relies on, Pedro would have been disappointed by his performance. He did however create a few opportunities, but he will be disappointed that he missed his late chance in the second half.
Substitutes:
Rey Manaj: 7
Dan Gosling: 6
Jo Hungbo: 6.5
Keinan Davis: N/A
Rob Edwards: 7
Due to Hassane Kamara’s red card against Burnley and Ismaila Sarr's absence, Edwards’ hand was forced to change the shape back to the three at the back to accommodate the lack of cover in the left-back position.
So far, it was probably the game that the Hornets had dominated the most and on another day, Watford would have been out of sight in the first half.
He is clearly still learning and becoming more experienced, but there have been clear signs of improvement so far this season.