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Titleist 620 MB, CB, and T100 irons to debut at U.S. Open



It is always said that the U.S. Open is the ultimate test of skill and patience for a player’s entire game — driving, ball striking, recoveries, and putting.

In the case of ball striking, there really is no better proving ground than the U.S. Open, and this week Titleist is seeding the new 620 MB and 620 CB Irons along with a new addition to the line – T100 irons. The seeding process is Titleist’s way of getting new clubs into the hands of players under playing conditions and we say just a few weeks ago this same process for the new TS Hybrids and driving irons.

So far, the details are vague on what the new irons have in store from our friends in Fairhaven, Massachusetts but we can make some very obvious conclusions. The new 620 MBs and CBs will be the replacement for the current line of blade and cavity backs (I realize there couldn’t be a more softball take but it has to be said).

What is interesting about these new irons is the return to the 600 branding for Titleist, which was last used in the lineup for the 695 MB and CB irons, which go all the way back to 2006. The 600 name has always been associated with some of the best Titleist blades ever made including the 670, 680, and 690s.

Looking at the first release pictures of the new 620s, it’s yet to be seen if there are any multi-material aspects to the designs, but either way, I’m sure we will find out more details soon.

Speaking to multi-material what has also been included in this announcement are the T100s. They have an obvious AP look to them but in what also appears to be a smaller package.

The Titleist AP line has been a massive success since its introduction, but if there was one tiny bit of criticism (and I’m really searching here) it would be that it was harder to seamlessly blend the CB line into the AP line for those looking to build combo sets. Again this is early speculation, but if the new T100 has a smaller profile of the new CB but with the added ball speed and MOI of an AP iron, you could be seeing a lot of the T100s in the bags of players from pros to club golfer looking for that added advantage in the longer irons and even into the short clubs

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Ryan Barath is part of the Digital Content Creation Team for GolfWRX. He hosts the "On Spec" Podcast on the GolfWRX Radio Network which focuses on discussing everything golf, including gear, technology, fitting, and course architecture. He is a club-fitter & master club builder with more than 17 years of experience working with golfers of all skill levels, including PGA Tour players. He is the former Build Shop Manager & Social Media Coordinator for Modern Golf. He now works independently from his home shop and is a member of advisory panels to a select number of golf equipment manufacturers. You can find Ryan on Twitter and Instagram where he's always willing to chat golf, and share his passion for club building, course architecture and wedge grinding.



  1. dat

    Jun 10, 2019 at 1:54 pm

    Let’s be honest, only the MBs look good, and at that – they’re probably going to be among the most unforgiving on the market.

  2. Jack

    Jun 10, 2019 at 1:25 pm

    Kuch suck a-hole

  3. F

    Jun 10, 2019 at 12:58 pm

    Fugly as ever

  4. Karl

    Jun 10, 2019 at 12:53 pm

    The MBs look amazing, I don’t care for the new CB look however – last model looked much cleaner IMO.

  5. DukeOfChinoHills

    Jun 10, 2019 at 12:12 pm

    The 620MB look gorgeous. The CBs are starting to look too busy. And the the T100 definitely look over designed. I’m not in the market, but I’m starting to get concerned where the iron lineup is going.

  6. The dude

    Jun 10, 2019 at 12:03 pm

    Who forges these?

    • A

      Jun 10, 2019 at 1:00 pm

      They’re forged of 8620 in Taiwan but they won’t tell you that

  7. 2putttom

    Jun 10, 2019 at 11:52 am

    wow ! I’m in

  8. Jordan

    Jun 10, 2019 at 10:45 am

    Was really looking forward to iteration #2 of the AP3s… wondering if that is still on the docket.

    • MacAllan

      Jun 10, 2019 at 10:59 am

      I’ve said it before but my post was deleted.
      AP’s are gone and replaced with T100 (AP2), T200 (AP3) and T300 (AP1).

      • Jordan

        Jun 10, 2019 at 12:15 pm

        Ah i guess i didnt know they were doing T200 or T300s as well. Good to know. I’m essentially just looking for a rocket 4 iron that i can hit 230 and the T200s and 300s hopefully will get me there. Thanks.

  9. Travis

    Jun 10, 2019 at 10:30 am

    Yes! Love the return of the curved muscleback! So many Titleist staffers have gone back to using the Titleist 680’s, not surprised to see Titleist go back to that design!

    I hope the T100 aren’t an AP2 replacement. The AP2’s have becoming iconic in their naming convention and it would be a bad move to go away from that.

  10. Dan

    Jun 10, 2019 at 9:30 am

    I’m still pissed I bought the MP-18 over the 716MB

  11. Johnny Newbern

    Jun 10, 2019 at 9:19 am

    The MB is the best looking club on the market. Love the return to the 600 classification.

    Ryan, any word on if the U500 will eventually be full set to replace the TMBs?

    • Ryan Barath

      Jun 10, 2019 at 10:29 am

      Great question but so far no news – by the looks of it I would say not likely at the moment

      • brian

        Jun 10, 2019 at 10:51 am

        Not sure if you mean Muscle Backs in general, or the 718 MB in specific when you say “MB is the best looking club on the market.” If the former, I agree. If the latter, I disagree. I’d put both the Callaway and Mizuno MBs over Titleist’s in the looks department.

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Whats in the Bag

Lydia Ko WITB 2021 (April)



Lydia Ko what’s in the bag accurate as of the Lotte Championship. 

Driver: PXG 0811 X Proto (9 degrees)
Shaft: Mitsubishi Tensei Pro White 1K 50 S (45.75 inches)

3-wood: PXG 0341 X GEN2 (15 degrees)
Shaft: Project X RDX Smoke Blue 60 5.5

5-wood: PXG 0341 X GEN2 (18 degrees)
Shaft: Graphite Design Tour AD IZ- 6 S. (42 inches)

Hybrids: PXG 0317 X GEN2 (19 and 22 degrees)
Shafts:  Graphite Design Tour AD IZ 65 R1

Irons: PXG 0311 P GEN3 (5-PW)
Shafts: Aerotech FC 70 S

Wedges: PXG 0311 Milled Sugar Daddy (54), 0311 Milled “Lydia” (58)
Shafts: Aerotech FC 80 S

Putter: PXG Prototype Thunderbolt C

Ball: Titleist Pro V1x

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Whats in the Bag

Corey Conners WITB 2021 (April)



  • Corey Conners WITB accurate as of the RBC Heritage.

Driver: Ping G400 LST (8.5 degrees @8, standard)
Shaft: UST Elements Gold 6F5 (tipped 1 inch, D4+)


3-wood: Ping G425 LST (14.5 degrees @15, small +)
Shaft: Project X HZRDUS Black 76 6.5 (43 inches, tipped 1 inches)

3-hybrid: Ping G425 (19 degrees @20, small +)
Shaft: UST VTS Red Hybrid 85 X (40.25 inches, D2)

Irons: Ping iBlade (4-PW)
Shafts: Project X 6.0

Wedges: Ping Glide 2.0 Stealth (50-SS, 56-SS); Titleist Vokey SM8 60-M
Shafts: Project X 6.0

Putter: Prototype PLD Prime Tyne H (Stealth finish) 

Grips: Golf Pride MCC Black/Blue (60R +1 wrap)

Ball: Titleist Pro V1

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Tommy Fleetwood puts prototype TaylorMade putter in play at RBC



Earlier this week at the RBC Heritage, we spotted English golfer Tommy Fleetwood testing putters on the putting green, and we now have confirmation that said putter, a prototype TaylorMade “Bandon 1,” has gone into play.

The putter is a combination of the Truss TM1, along with a traditional plumbers neck hosel. It is also fitted with a Pure Roll insert. Tommy has a propensity for messing around with putters, so whether it stays in the bag long term or not will be something to follow.

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