Machamp - Attack (Physical)

[Bosstacos]

Stats: 90 HP / 130 Atk / 80 Defense / 65 SpA / 85 SpD / 55 Spe
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Build

Machamp @ Assault Vest
Ability: No Guard (Every move used by or against this Pokemon will always hit.)
EV`s: 252 HP / 132 Atk / 68 Def / 52 SpD / 4 Spe
IV`s: 0 Spe
Brave Nature
- Dynamic Punch
- Rock Slide / Stone Edge
- Knock Off
- Ice Punch

Offensive Calculations

132+ Atk Machamp Dynamic Punch vs. 4 HP / 0 Def Mega Kangaskhan: 174-206 (96.1-113.8%)
 -75% chance to OHKO
132+ Atk Machamp Dynamic Punch vs. 84 HP / 12 Def Hydreigon: 186-218 (104.4-122.4%)
132+ Atk Machamp Rock Slide vs. 0 HP / 0 Def Mega Charizard Y: 156-188 (101.9-122.8%)
 -Based on a double-target attack
-1 132+ Atk Machamp Ice Punch vs. 0 HP / 0 Def Salamence:140-168 (82.3-98.8%)
132+ Atk Machamp Ice Punch vs. 4 HP / 0 Def Garchomp: 180-216 (97.8-117.3%)
 -93.8% chance to OHKO
132+ Atk Machamp Dynamic Punch vs. 0 HP / 0 Def Bisharp: 348-412 (248.5-294.2%)
132+ Atk Machamp Ice Punch vs. 252 HP / 252+ Def Whimsicott: 70-84 (41.9-50.2%)
132+ Atk Machamp Dynamic Punch vs. 4 HP / 0 Def Mega Lucario: 192-228 (131.5-156.1%)
132+ Atk Machamp Knock Off (97.5 BP) vs. 220 HP / 100 Def Cresselia: 90-106 (40.3-47.5%)
132+ Atk Machamp Dynamic Punch vs. 252 HP / 164 Def Heatran: 140-168 (70.7-84.8%)
132+ Atk Machamp Knock Off (97.5 BP) vs. 252 HP / 0 Def Aegislash-Shield: 78-94 (46.7-56.2%)
-1 132+ Atk Machamp Ice Punch vs. 252 HP / 0 Def Landorus-T: 128-152 (63.5-77.5%)
132+ Atk Machamp Ice Punch vs. 252 HP / 116 Def Thundurus: 100-118 (53.7-63.4%)

Defensive Calculations

252 Atk Parental Bond Mega Kangaskhan Double-Edge vs. 252 HP / 68 Def Machamp: 163-195 (82.7-98.9%)
252+ SpA Mega Charizard Y Overheat vs. 252 HP / 52 SpD Assault Vest Machamp in Sun: 153-180 (77.6-91.3%)
252 Atk Adaptability Mega Lucario Close Combat vs. 252 HP / 68 Def Machamp: 164-194 (83.2-98.4%)
252+ SpA Heatran Heat Wave vs. 252 HP / 52 SpD Assault Vest Machamp: 64-76 (32.4-38.5%)
 -Based on a single-target attack
252+ SpA Life Orb Hydreigon Helping Hand Draco Meteor vs. 252 HP / 52 SpD Assault Vest Machamp: 165-196 (83.7-99.4%)
148+ SpA Ludicolo Scald vs. 252 HP/ 52 SpD Assault Vest Machamp in Rain: 58-69 (29.4-35%)

Thoughts

To me, Machamp is a very under-rated Pokemon in the VGC 2015 format as it checks many of the common threats, a major one being Mega Kangaskhan. It has a nice move pool and a good ability in No Guard. However, with no effective way to gain back HP and a incredibly poor Speed stat, Trick Room is an absolute necessity. A Pokemon like Gothitelle would be an excellent partner as it has access to both Trick Room and Heal Pulse. In this particular build I opted for more investment in Special Defense, but if you took out the EVs in Special Defense and Speed and placed them into Attack, it would allow Machamp to reach an Attack stat of 191, high enough to OHKO Mega Kangaskhan with Dynamic Punch. A set running Guts (to scare away burns) and Close Combat (for higher damage output) would also be viable. In conclusion, Machamp is a very strong and threatening Pokemon in this format.

[Slec]

This only problem i have with no guard Machamp is that every attack will hit it no matter what. Also what are you going to do about Talonflame, Cresselia, Sylveon, Azumarril, Mega Gardevoir, Mega Metagross, and Togekiss?

[Marcusube]

This is a good build, however I have a concern. If Machamp is so slow and relies on Trick Room, the fact that you're using an Assault Vest means that the first turn before setting up Trick Room so Machamp would be open to getting fainted by faster opponents? Sure you could make the argument that Machamp can be used late game but that really comes across as ineffective.

Also why not just invest more into attack seeing as how Machamp with a little more attack investments can OHKO opponents instead of leaving it to chance?