Martijn Keltner

Belton High AP Physics/Biology/Zoology teacher and Swim Coach

[Martijn Keltner @SwimCoach76]

@Braden_Keith @swimswamnews Caroline Bruce

[Martijn Keltner @SwimCoach76]

@nheldt @Braden_Keith The only acceptable answer is The Netherlands!

[Kansas City Chiefs @Chiefs]

Chiefs Kingdom, who wants a signed jersey from our newest cornerback?!?

RT for a chance to win‼️

[MLB @MLB]

Collecting baseball cards has always been one of the best hobbies to get kids into baseball!

Repost and comment for your chance to win this 2026 @Topps Series 1 box to open with your kids ❤️

[MLB @MLB]

We’re celebrating Vladimir Guerrero Jr.'s birthday with a giveaway 🥳

Repost and reply for a chance to win this autographed Bowman’s Best card!

[Martijn Keltner @SwimCoach76]

@Griddy_FF Swimcoach76

[MLB @MLB]

El Niño's birthday calls for an epic giveaway 🥳

Repost and reply for your chance to win this @Topps Luminaries card!

[Kansas City Chiefs @Chiefs]

NEW NEWS!!!!

RT to win a @newheightshow hat signed by @tkelce and to help him win the #WPMOYChallenge

[MLB @MLB]

No tricks here, we have a true 1-of-1: Joey Votto! 😆

Repost and reply for a chance to win our final @Topps #1of1Day giveaway!

[MLB @MLB]

A celebration about Ozzie

Repost and reply for a chance to win this autographed Ozzie Smith @Topps card!

[USA Swimming @USASwimming]

Elevate your swimming in 2026 🔥

RT for a chance to win this Speedo Fastskin HyperSpark suit!

2025 #HolidayGiveaway rules » https://t.co/UDkbaKGaoX

[USA Swimming @USASwimming]

The perfect present for swimmers this holiday season! 🎁

RT for a chance to win this @SWIMOUTLET holiday box.

2025 #HolidayGiveaway rules » https://t.co/UDkbaKFCzp

[USA Swimming @USASwimming]

A good gift to represent a good cause!

RT to win a @SwimFoundation swag bundle.

2025 #HolidayGiveaway rules » https://t.co/UDkbaKFCzp

[MLB @MLB]

A natural entertainer on the diamond 🎩💫

Repost and reply for a chance to win this Javy Báez @Topps relic card!

[Kansas City Chiefs @Chiefs]

We're giving away a signed @TeamJuJu helmet thanks to @StorageMart 👏

RT this post and you're entered to win!

[Martijn Keltner @SwimCoach76]

After the semifinal round of State diving freshman Jax Coble sits in 16th place and has qualified for the finals!!

[Martijn Keltner @SwimCoach76]

After the preliminary round of State diving Freshman Jax Coble sits at 18th place and has qualified for the semifinal round! Junior Braeden Hill finishes 24th!

[Wat’s Island🏝 @JaylenWatson12]

Giving away 7 tickets to Sunday Night game retweet for a chance to win‼️

[Arrowhead Live @ArrowheadLive]

🚨GIVEAWAY🚨

How about another? We are giving away this @RoyalsJalen rookie on-card auto to a lucky fan✍️

All you need to do to enter:
1️⃣RETWEET
2️⃣FOLLOW @ArrowheadLive

⏳Giveaway ends at the conclusion of Jalen’s NFL Debut⏳
#Chiefs | #ChiefsKingdom

[Arrowhead Live @ArrowheadLive]

🚨SEASON KICKOFF GIVEAWAY🚨

Let’s start the season right by giving away a 2022 & 2025 Red Friday Flag and a @RoyalsJalen rookie auto card to a lucky fan✍️

All you need to do to enter:
1️⃣RETWEET
2️⃣FOLLOW @ArrowheadLive

⏳Giveaway ends 9/5 @ 10pm CST⏳
#Chiefs | #ChiefsKingdom