Mikel Arteta hailed Arsenal's "hungry" youngsters after Bukayo Saka and Eddie Nketiah fired their side into the FA Cup fifth round with a 2-1 win against Bournemouth on Monday.
Arteta turned to youth at Dean Court and Saka, Nketiah and Joe Willock repaid the Arsenal manager's faith with influential displays that secured a trip to third-tier Portsmouth.
Saka gave Arsenal an early lead as the 18-year-old full-back bagged his third goal of the season with a superb strike.
Nketiah got the second before the interval to ensure Arteta took another step towards emulating his FA Cups triumph as an Arsenal player in 2014 and 2015.
Sam Surridge got one back for Bournemouth in the closing minutes, but it was too late to salvage a replay.
"I'm very pleased. Always tough to come here and win, we've done it with a young team as well," Arteta said.
"I have a lot of faith in them. I think they are developing really well. They are willing and hungry and will only get better."
It was not all plain sailing by the seaside for Arteta, who added: "We scored two fantastic goals, but after that we became a little bit sloppy and I didn't like that very much."
- Bournemouth outgunned -
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Arteta's men didn't have it all their own way in the second half and Martinez took out his own player when he clattered into Shkodran Mustafi in a bid to catch a cross. Mustafi had to be stretchered off as a result of the clash and Arteta said: "We'll have to assess tomorrow but when Mustafi has to come off normally it is not a good sign."