Arrowheadlines: Kansas City Chiefs News 5/7

Chiefs Linebackers Tour the American Jazz Museum with Local High School Football Team from The Mothership

Before the tour had even begun at the American Jazz Museum Wednesday afternoon, linebacker Dee Ford, already very familiar with the building, made his way to an area of it called the "Blue Room."

The "Blue Room," while honoring the history of Kansas City jazz with several exhibitions in it, also serves as an active club to this day.

Inside of it, next to a stage, sits a piano.

Ford, of course, couldn't resist.

Chiefs Running Backs Host Play 60 Event at Operation Breakthrough from The Mothership

In the early afternoon, about 25 children joined Charles, Thomas and West on the facility playground and they were broken up into three separate Play 60 stations.

With the kids being smaller in size, Charles had to help some along with the station he was in charge of.

Thomas directed the ladder station.

"We were doing one-legged hops, two-feet hops and stuff like that," he said. "We're just letting them have fun. It's something that they never experienced before."

KCChiefs.com Photo Gallery: Chiefs Visit American Jazz Museum

Sources: Chiefs sign 10 undrafted free agents from Chiefs Digest

The post-draft process continues with the addition of undrafted free agents and invitations to rookie minicamp, which is scheduled for May 16-18.

While various reports have made the rounds since the end of the NFL Draft, most did not specify if a player was signed to an undrafted free-agent deal or was an invite to the rookie minicamp.

The Chiefs have yet to officially announce transactions, but the following 10 players are independently confirmed through sources by ChiefsDigest.com as undrafted free-agent signings:

There's a wide range of opinions on Chiefs from ESPN

ESPN's post-draft Power Rankings placed the Kansas City Chiefs at No. 14, or right about in the middle of the NFL. Some of the rankings of other media outlets have different opinions about the relative strength of the Chiefs. Let's have a look.

Chiefs look better than 14th-best NFL team from ESPN

I'd still have the Chiefs a couple of spots higher than 14.

The Chiefs will find out quickly next season how good they are. After their season-opening game at Houston, the No. 17 team in the Power Rankings, the Chiefs have games against teams ranked fourth (Denver Broncos), third (Green Bay Packers) and 10th (Cincinnati Bengals).

For new Chiefs CB Peters, trick is learning how and when to let go from FS Kansas City

The Real Marcus walks into Arrowhead with a target on his back. The Real Marcus has to learn one of the hardest young-man lessons of all: How to take something -- something stupid, something that bothers you, something that eats at you, something that demands retribution -- and then just let it go.

"Just 'next-play' mentality," said Peters, who will participate in the Chiefs' rookie minicamp May 16-18, but will be absent until mandatory minicamp a month later because Washington is still in its spring quarter. "(Take a) 'next-play' mentality and move on. Like I said, you learn from your experiences.

"With me, I feel I'll deal with situations a lot different than (the) Eastern Washington (game) when it occurs. We know the outcome of (that), so we make adjustments and change the outcome."

Roster prediction: Offense from ESPN

Now that the draft has concluded, I'm going to make an early prediction on the 53-player roster the Kansas City Chiefs will have in September when they begin the regular season. I'll start with the offense and continue in a subsequent post with the defense and kicking specialists.

Quarterback (3): Alex Smith, Chase Daniel, Aaron Murray. More than any other position group on the roster, this spot looks set. Only an injury to one of the top three or an upset of dramatic proportions could change this.

Chiefs should be watching Tom Brady situation carefully from ESPN

While there's no mention of any of New England's games against the Chiefs in the Wells report, it's naïve to believe Brady and the Patriots weren't doctoring footballs in any of those games.

The Chiefs are 2-4 in games Brady started for the Patriots, including a 41-14 Kansas City win last year at Arrowhead Stadium. Brady could have been throwing a bowling ball and still defeated the Chiefs in Kansas City's last trip to New England. The Chiefs, quarterbacked by Tyler Palko in 2011, lost to Brady and the Patriots 34-3.

Top five undrafted free-agent signings after 2015 NFL Draft from NFL.com

2. Kansas City Chiefs: DB Justin Cox (Mississippi State)

An off-field incident got him suspended during his senior season, and might have kept him from being drafted this year. His athleticism is unquestioned (4.36 40, 38-inch vertical at the NFL Scouting Combine), however, and he could make an impact in the secondary and on special teams for the Chiefs right away.

Jamell Fleming a near-lock for Kansas City Chiefs roster from Tulsa World

NFL rosters won't see significant cuts for a few more months, but that won't stop offseason speculation for final rosters, including from "stagdsp" of arrowheadpride.com.

At cornerback, the writer expects the Kansas City Chiefs to keep four or five players.