Footballer Lionel Messi missed a penalty and Barcelona conceded late as its 29-match unbeaten streak ended in a 1-0 loss to city rival Espanyol in the first leg of their Copa del Rey quarterfinal on Wednesday. Messi failed from the spot in the 62nd minute, his shot brilliantly saved by goalkeeper Diego Lopez. Youngster Oscar Melendo netted the winner for the hosts in the 88th with his first goal as a professional.

“I have no words, I was looking forward to this first goal,” said the 20-year-old Melendo, who had come on as a substitute in the second half. It was Espanyol’s first win against Barcelona at its RCDE Stadium. The second leg of the Catalan derby is next week at Camp Nou.

Barcelona hadn’t lost since a 2-0 defeat by Real Madrid in the second leg of the Spanish Super Cup on Aug. 16. It had won 23 of its last 29 matches in all competitions. “We knew we would lose one day,” Barcelona midfielder Sergio Busquets said. “The positive thing is that in a week we have a chance to rebound and advance.”

Messi had his chance from the spot after Sergi Roberto was fouled by Esteban Granero, but his low shot into the right corner was stopped as Diego Lopez dived to his left to tip the ball away. It was a rare miss for Messi, who is having a stellar season and is the Spanish league’s top scorer with 17 goals. “The penalty save gave us the boost that we needed,” Melendo said. “We were playing too defensively.” Melendo netted the winner with a low shot from the middle of the area after a well-timed pass by Marc Navarro.