WALTHAM, Mass. -- Al Horford is the biggest free agent ever to sign with the Boston Celtics.And hes going to try to make sure hes not the last.People around the league, they appreciate, they understand how special it is, Horford said Friday at a news conference surrounded by championship banners at the Celtics practice facility. I hope that if Im coming here, it will definitely open the door to other free agents.Horford agreed to a four-year, $113 million deal with the Celtics last week on the opening day of NBA free agency. A few hours later, he learned that Kevin Durant had spurned Bostons offer and decided to sign with the Golden State Warriors instead.It would have been nice, but I have to move on, Horford told reporters Friday morning, after he was introduced but before the contract had been approved by the NBA office.Without Durant, the Celtics missed out on a player that could have elevated the team into immediate contention for the franchises 18th NBA title. General manager Danny Ainge conceded that Horford alone doesnt do that, even on a roster that already included All-Star Isaiah Thomas.Right now it definitely makes us better, Ainge said. Were not done. We still have work to do.The news conference was delayed at the start because of a paperwork problem that kept the Celtics from saying Horford was officially signed. Owner Wyc Grousbeck said it was just a formality, but in the meantime they were only welcoming Horford to Boston.That didnt stop the players wife from taking a panoramic photo of the 17 NBA championship banners ringing the practice court. The numbers on the scoreboards had all been changed to 18 -- the next Celtics title.He might not have seen it, theres a blank banner up there on the right, Grousbeck said. Were hoping to work together on that.The Celtics have all those banners and retired numbers, but NBA free agents have traditionally been drawn more to the attractions of South Beach or the media possibilities in New York and Los Angeles. Boston has signed some big-name free agents in the past -- Shaquille ONeal and Dominique Wilkins among them -- but only at the tail end of their careers.During Ainges last roster rebuild, Timberwolves big man Kevin Garnett balked at coming to Boston -- in a trade -- until Ray Allen was acquired -- also in a trade -- and added to a roster that already had Paul Pierce. Now that the Celtics have Horford, they could be a more attractive destination for the next crop of free agents.Its a great organization. Theres a lot of history here, Horford said. I feel like everyone around the league respects it. Thats a big part of the reason why I chose to come here.This is a special place. People are open to it, he said. They will see how special it is.A 6-foot-10 center who spent his first nine years with the Hawks, Horford has averaged 14.3 points and 8.9 rebounds in his career. And he saw firsthand what the Celtics were building in the playoffs this season, when Atlanta eliminated Boston in six games.Im very encouraged by the group of players that are here, he said. Young, talented hardworking players. Playing in that series, I saw the passion that they played with and how much they had gotten better during the season.The feeling is mutual.The way that he was flying around in that playoff series, and the harms way that he put us in, its great to have him here now, Celtics coach Brad Stevens said.---Follow Jimmy Golen on Twitter at http://www.twitter.com/jgolen . Fake NBA Jerseys .com) - Manchester City midfielder David Silva is expected to miss the next four weeks because of a calf problem. NBA Jerseys Store . 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SEC Equestrian Riders of the Month (November 2016)Equitation Over Fences Rider of the Month:?Kai DeVoglaer - Texas A&MCaptured her first two MOP honors of her careerWon both of her points by an average score of 11.5Helped the Aggies sweep Delaware State in Fences en route to tying the school record for most points in a matchEquitation On The Flat Rider of the Month:?Meg OMara - GeorgiaRode to a perfect 4-0 record in Equitation on the Flat to remain undefeated throughout the fall schedule.Defeated opponents by an average of 3.25 points this month, and has defeated opponents by an average of 6.85 on the season.Earned MOP honors on the road at top-ranked Texas A&M, marking the fifth MOP honor of her career.Has earned a total of 22 career wins.ddddddddddddHorsemanship Rider of the Month:?Kaci Fisher - Texas A&MLed the Aggies to a perfect 10-0 mark in the month of November, sweeping both Georgia and Delaware State in HorsemanshipEarned her second and third MOP honors of the seasonBecame the first Aggie to earn three MOPs in a season in Horsemanship since Laura Brainard in 2013-14Scored an average of 74.75 with an average margin of victory at 7.25Reining Rider of the Month:?Alexa Rivard - AuburnScored a career-high 74 points at No. 4 Georgia.Picked up a win for Auburn vs. South Carolina with a 67.5-66.5 victory over Maddie Thiel ' ' '