On the traditional 20-80 scout grading scale. Done pitch by pitch (5).
Well here is an article done by Andrew Pentis of Milb.com and well Liam Hendriks of Perth, Australia.
I can't get enough of it, and have read it a few times. And i have to say I've only seen Hendriks a few times now, but, its pretty much right on give or take a little here with the 65 Changeup hmm. Pretty impressive stuff. The whole article can be found and read here:
Here is Hendriks describing his own arsenal for Milb.com...
Pitch one: Four-seam fastball
Origin: In Australia, we weren't allowed to throw curveballs until the age of 14, so I had to rely on fastballs and changeups. It's a countrywide rule. In games -- obviously, they can't control your training and all that -- it's considered a balk if you throw any sort of breaking ball.
Purpose: I'm starting to go now a lot more to the two-seam [fastball], but I still throw the four-seam in certain counts and things like this. It adds a little bit of "velo" and it doesn't move as much, so it's something different. I like to throw it in to lefties and away from righties; that's where it's most effective for me. I usually go glove-side four-seam, arm-side two-seam to mix it up.
Grip: Straight across the horseshoe. I just rear back and throw it.
Speed: Later on in the count, I tend to gas it up a bit more. Most of the time I hit 94, it's with at least two strikes on the guy. I really like to throw it as hard as I can, so anything above 90 is a good speed for me. ... I have only picked up the velocity in the last couple of years. During the 2009 offseason, the Twins shut me down completely from throwing, so I hit the gym pretty hard. I came into camp the next year feeling like I could let it loose, and that's carried over, which has helped me out a whole bunch.
Grade: I'm slightly above the Major League average speed and I have a little bit of movement to it -- it jumps at the end -- so I'd say a 55, 60.
Pitch two: Two-seam fastball
Origin: I learned it my first year of pro ball in the Gulf Coast League in 2007. I went home late 2007, early 2008, when I was [only throwing] four-seam, curveball, changeup. I dropped my arm angle a little bit to get some extra movement and started throwing a two-seam and a slider when I went to that arm slot.
Purpose: It's a bit of a different look and it plays off of my changeup really well because it moves, roughly, in the same direction. Plus, it added a lot of ground-ball outs for me. If it's low, it sinks, but if it's up, it still has the run into a right-hander, which is always nice.
Grip: Straight in the middle, along the seams, in between the two horseshoes. The biggest thing is I use my middle finger rather than the pointer finger. I throw it identical to the way I throw my four-seam, and it comes off my finger and starts moving downward -- or, it does most of the time; sometimes it does something different.
Speed: My usual range last year was 86-94 [mph]. Usually, I like to have it between 88 and 92; that's where my two-seam is more affective.
Grade: Speed-wise, it's probably a 50, 55. Movement-wise, it ranges: On a good day, it can be 55 to 60; on an average day, it's around 50 to 55. I'd give it a 55.
Pitch three: Changeup
Origin: I have been throwing a changeup since I was about 12. When I was growing up, I never threw overly hard, so I had to rely on changing speeds a lot. It's definitely my favorite pitch to throw.
Purpose: I like throwing my changeup a lot to lefties and righties. I can throw it in any count.
Grip: I hold it in a circle change grip, so I grip the middle of the horseshoe with my pointer finger, the inside of it to add a little bit of movement and take some speed off.
Speed: Around 78-81. Usually, I like to keep it just below 80. It's got a decent differential in speed with my fastball.
Grade: It's not a pitch that I shy away from, so I grade that one about a 65.
Pitch four: Slider
Origin: I started developing it on my own in 2008, but I was having trouble with grips and stuff like this. And then one of my coaches back in Australia, Graeme Lloyd -- he played in the big leagues for  years, won a couple of rings with the Yankees -- helped me out. He was a big, tall lefty, a sinker-slider-cutter guy who just did amazing things with the baseball, so it's definitely an honor to learn from him.
Purpose: Usually, I like to keep it away from righties and in to lefties. I have been working this offseason on backdoor sliders to left-handers, just because it adds something that maybe they haven't seen before or aren't expecting.
Grip: Along the edge of the horseshoe with my middle finger. I pretty much throw it as hard as I can.
Speed: In 2010, when I was having a pretty good year, it was between 82-86. Lately, the speed's been lower, but it's been more of a deceiving pitch. I like to throw it above 82.
Grade: I'd grade it around Major League average, a 50. It works well for me when I can get it over and things like this. It's one of the pitches I am gaining confidence in during Spring Training.
Pitch five: Curveball
Origin: I started throwing it in 2005. I had just come back from my first knee surgery. I could never throw a curveball before then, and I played around with it while I was hurt, [trying] grips and picking everybody's brains around me and managed to start throwing it.
Purpose: It's not a mid-at-bat pitch. It's usually a good first pitch to get over or a strikeout pitch.
Grip: When I first started throwing it, it was extremely slow, about 65-70 miles an hour. Since I have gained velocity on my fastball, it's now picked up. I like it around 72, 74, and I can get it a little bit harder if I really bear down on it. But most of the time, that's more of a two-strike pitch in the dirt.
Speed: I grip it off my pointer finger. Coaches were telling me to throw it off my middle finger, but that never felt comfortable.
Grade: Last year, it was around Major League average. This year, it's not quite working as well for me, so at the moment it's about a 45. But I'm hoping I can get it back to where it was.
Andrew Pentis is a contributor to MiLB.com. Follow him on Twitter at @AndrewMiLB. This story was not subject to the approval of the National Association of Professional Baseball Leagues or its clubs.