Five things you should know about the Lions 53-man roster:

1. It’s fluid. It could change at any time and probably will. GM Martin Mayhew will take a look at the other cuts and maybe find a player who interests him and claim him off the waiver wire. After Mikel Leshoure’s two-week suspension he’ll have to cut someone to get Leshoure on the roster.

2. The Lions think they have something in quarterback Kellen Moore who they kept on the 53. If they had put him on practice squad he would have to clear the waiver wire. Apparently they didn’t want to take that chance. It’s not that he’s a threat to Matthew Stafford, but perhaps they think they can coach him up to eventually be the back-up. Remember last year the rule changed that the 46th player dressed on Sunday does not need to be the third quarterback. Drew Stanton didn’t dress for a game all season.

3. I was asked this question on Twitter: Are the Lions are so set at cornerback that they no longer need Alphonso Smith? I didn’t quite know how to answer that. Smith was cut Friday. Clearly they didn’t think Smith was as good as Chris Houston, Bill Bentley, Jacob Lacey or Kevin Barnes. Speedy rookie Jonte Green has some rough spots but the Lions drafted him in the sixth round for a reason.

4. Possible practice squad members include: Wide receiver Patrick Edwards, tight end Austin Wells, guard Rodney Austin, guard Pat Boyle, tight end Alex Gottlieb, defensive end Edmon McClam, linebacker Carmen Messina, wide receiver Wallace Miles and defensive tackle Tracy Robertson. Eight is the limit. Remember that being on the practice squad is better than being home on the couch. It can certainly lead to a spot on the 53.

5. Seven of the Lions’ eight draft picks from this year made the 53-man roster. The only exception is fifth-round pick cornerback Chris Greenwood who did not participate in training camp at all after undergoing abdominal surgery in May for an injury suffered during OTAs. He started camp on the PUP list. Linebacker Travis Lewis, a seventh-round pick, has a real chip on his shoulder about being drafted so late and that only works to the Lions’ advantage. He wants to prove he’s better than that. He’s smart and tough. So far, so good.

( Follow @PaulaPasche on Twitter. Order her new book, “100 Things Lions Fans Should Know & Do Before They Die’’ here. It’s also available at bookstores.)