In our final pre-season friendly, we shot into a two-goal lead via Dean Richards and a Jamie Redknapp special but the Italians pulled a goal back before the break and levelled after coming more and more into the game in the second half.
The boss said he was delighted with some of our passing and movement but was equally disappointed with the way Lazio levelled.
Glenn reflected: "I was very pleased with how we started both defensively and with the ball but to get two goals up to end up 2-2 and possibly could have lost it in the end was very disappointing.
"Some of our play was excellent and movement was good but, as I say, 90 minutes of football against quality opposition is a long time.
"It was good though because we didn't have our full side out. I felt we had to protect some players, the last thing we want is more injuries, so I had to experiment a bit.
"I had a look at Goran in midfield, at Jamie's 'major' debut, Matthew Etherington came in and had a great first half but he has to try and prolong it.
"So there were a lot of good things there and a lot of things, the second goal for instance, that were not good enough. If we concede like we'll be in for a hard, hard season.
"There are lessons we can learn from it. Their movement up front as the game progressed, particularly in the second half, is as good as you;ll see in the Premiership.
"We dealt with it not too bad but handed them a second goal on a plate, which was very disappointing."
Glenn Hoddle spoke of mixed emotions after Sunday's 2-2 draw against Lazio at the Lane.