The longest-serving manager at Pittodrie since Sir Alex Ferguson, Calderwood is hoping he will mark the milestone with a Clydesdale Bank Premier League win over Motherwell today.

Calderwood was in a reflectivemood ahead of the visit of Mark McGhee's side. "My time at Aberdeen has been absolutely fabulous," he said. "We have had a lot of highs and a few lows along theway, but it is a wonderful club to work for. Hopefully there will be more highs in the future."

Calderwood branded his lowest moment at the club last season's 4-3 Scottish Cup semi-final defeat to Queen of the South. "The biggest regret was losing the semi-final last year because we would have been in Europe if we had won," said Calderwood. "I also thought we would have had a great chance of winning the final too. Personally, the greatest moment was actually when we got that wonderful result in Dnipro because we knew that meant we had made it into the group stages of the Uefa Cup. That was fabulous, as was finishing in third place in the league by beating Rangers a year and a half ago,which was another wonderful achievement."

However, Calderwood believes his side will have their work cut out if he is going to celebrate the milestone with a win over a Motherwell side that will be looking to bounce back after last week's shock 4-1 home defeat to Hibernian.

"I was reading in the papers last week that Mark wasn't very happy with his players so I'm sure he had a few choice words for them. I expect them to be a completely different side when they face us on Saturday."

Indeed, McGhee has been giving his players double training sessions following the defeat to Hibs. "I have been looking for reasons for why we were the way we were last week," explained the Motherwell manager. "Part of it was our preparation was different.

"We had played the two Old Firm games and then looked very tired when we lost 1-0 to Falkirk. So I thought we should ease up on them a bit.We did our usual weights and recovery session on the Sunday and, for the first time, gave them Monday off. "We lightened it up and only had one training session each on Tuesday and Wednesday, and it was almost the players who persuaded me they should have their usualThursday off and they would be fine. "We had a light training session on the Friday and it resulted in us just not being right. We weren't up to speed, we weren't focused and it ended up in a really poor performance. "So we all take responsibility, me included, and what we have done this week, from Sunday, is focus on the Aberdeen game. "We trained twice on Monday, Tuesday and Wednesday, and hopefully the work we have done will get them really focused on the game."